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small interfering RNA bound to a messenger RNA, cartoon model. siRNAs are synthetic RNA interference tools used for inducing temporary reduction of mRNA expression.

#116247992 - small interfering RNA bound to a messenger RNA, cartoon model...

small interfering RNA bound to a messenger RNA, cartoon model with semi-transparent surface. siRNAs are synthetic RNA interference tools used for inducing temporary reduction of mRNA expression. Stock Photo

#116247198 - small interfering RNA bound to a messenger RNA, cartoon model..

Transfer RNA (tRNA) is a small molecule that carries amino-acids to ribosomes, where they are linked into a nascent protein. Cartoon model with semi-transparent surface. Stock Photo

#36152598 - Transfer RNA (tRNA) is a small molecule that carries amino-acids..

Ribbon model of p53 protein bound to DNA molecule. p53 (aka tumor protein 53) is a transcription factor whose inactivation can trigger the onset of cancer.

#26037943 - Ribbon model of p53 protein bound to DNA molecule. p53 (aka tumor..

DNA binding domains of transcription factors Oct1 and Sox2, which are essential for self-renewal of embryonic stem cells.

#19977210 - DNA binding domains of transcription factors Oct1 and Sox2, which..

Insulin molecule, space-filling model Insulin is a pancreatic hormone which is central to regulating fat and carbohydrate metabolism in the body Atoms are coloured according to convention nitrogen-blue; carbon-gray; oxygen-red; hydrogen-white; sulphur-

#18850264 - Insulin molecule, space-filling model Insulin is a pancreatic..

Glutamine amino acid molecule, ball and stick model Atoms colored according to convention Stock Photo

#18850262 - Glutamine amino acid molecule, ball and stick model Atoms..

Glucose molecule, ball and stick model. Shown in its most common form in aqueous solution - glucopyranose. Stock Photo

#18850230 - Glucose molecule, ball and stick model. Shown in its most common..

Fructose molecule, ball and stick model. Shown in its most common form in aqueous solution - fructofuranose. Stock Photo

#18850225 - Fructose molecule, ball and stick model. Shown in its most common..

Ethanol, ball and stick model. Also known as ethyl alcohol or drinking alcohol, it is the most widely accepted recreational psychoactive drug, and is also used as a solvent, fuel, or indicator in thermometers. Stock Photo

#18850224 - Ethanol, ball and stick model. Also known as ethyl alcohol or..

Serotonin is a hormone that contributes to feeling of happines Ball and stick model, atoms are coloured according to convention nitrogen-blue; carbon-gray; oxygen-red; hydrogen-white Stock Photo

#18728090 - Serotonin is a hormone that contributes to feeling of happines..

Human hemoglobin in its oxy- state. Alfa and beta subunits are coloured yellow and red

#18665357 - Human hemoglobin in its oxy- state. Alfa and beta subunits are..

Antibody, space-filling model. Light and heavy chains are colored yellow and orange, respectively. Stock Photo

#18665349 - Antibody, space-filling model. Light and heavy chains are colored..

Acetylcholine is an important neurotransmiter in both central and peripheral nervous system. Stock Photo

#18665312 - Acetylcholine is an important neurotransmiter in both central..

DNMT3 is an enzyme from a group of DNA methlytransferases, which modify DNA in order to regulate gene expression and activity

#18482719 - DNMT3 is an enzyme from a group of DNA methlytransferases, which..

Insulin molecules assembled in a hexamer, coordinated around the zinc atom Insulin is a pancreatic hormone which is central to regulating fat and carbohydrate metabolism in the body It is stored in the body as a hexamer, while the active form is monomer

#18482714 - Insulin molecules assembled in a hexamer, coordinated around..

High-resolution ribbon model of an immunoglobulin molecule with transparent surface Heavy chains are coloured white, while light chains are red Raytraced, isolated on black Immunoglobulins are Y-shaped proteins produced by B-cells type of lymphocytes

#18482702 - High-resolution ribbon model of an immunoglobulin molecule with..

Hepatitis B capsid, space-filling model. Hepatitis B is a viral infectious disease that affects the liver.

#116247578 - Hepatitis B capsid, space-filling model. Hepatitis B is a viral..

L-carnitine is a natural compound sythesized from amino acids methionine and lysine, that is widely used as a weight loss supplement. Stock Photo

#36152347 - L-carnitine is a natural compound sythesized from amino acids..

Dihydrotestosterone is a steroid hormone and a contributing factor to male baldness, prostatic benign hyperplasia and prostate cancer. Stock Photo

#26037936 - Dihydrotestosterone is a steroid hormone and a contributing factor..

Oxygen molecule, ball-and-stick and space filling models

#18850253 - Oxygen molecule, ball-and-stick and space filling models

Vitamin B12, ball and stick model. Atoms are coloured according to convention (nitrogen-blue; carbon-gray; oxygen-red; hydrogen-white; phosphorus-orange; cobalt-pink).

#18728120 - Vitamin B12, ball and stick model. Atoms are coloured according..

Thyroxine, ball and stick model. Thyroxine is a thyroid hormone that regulates metabolism. Atoms are colored according to convetion.

#18728095 - Thyroxine, ball and stick model. Thyroxine is a thyroid hormone..

Vitamin B9, also known as folic acid, ball and stick model. Atoms are coloured according to convention (nitrogen-blue; carbon-gray; oxygen-red; hydrogen-white).

#18728081 - Vitamin B9, also known as folic acid, ball and stick model. Atoms..

ATP synthase, ribbon model. ATP synthase is an enzyme that provides energy for cells by synthesizing adenosine triphosphate. Stock Photo

#18665351 - ATP synthase, ribbon model. ATP synthase is an enzyme that provides..

Alanine (amino acid) molecule, ball and stick model. Atoms colored according to convention.

#18665306 - Alanine (amino acid) molecule, ball and stick model. Atoms colored..

Ribbon model of p53 protein bound to DNA molecule p53 aka tumor protein 53 is a transcription factor whose inactivation can trigger the onset of cancer

#18482715 - Ribbon model of p53 protein bound to DNA molecule p53 aka tumor..

The structure of human prolactin, cartoon model. Prolactin is a hormone with a primary role in enabling female mammals to produce milk.

#36152350 - The structure of human prolactin, cartoon model. Prolactin is..

HIV virus reverse transcriptase protein, bound to its target DNA. Reverse transcriptase transcribes viral RNA to DNA in a host cell.

#36152336 - HIV virus reverse transcriptase protein, bound to its target..

BRCA2 (breast cancer susceptibility gene 2) tumor suppressor bound to DSS1. BRCA2 mutations are implicated in hereditary breast, ovarian and prostate cancer, as well as malignant melanoma and pancreatic cancers.

#36150109 - BRCA2 (breast cancer susceptibility gene 2) tumor suppressor..

DNA binding domains of transcription factors Oct1 and Sox2, which are essential for self-renewal of embryonic stem cells.

#26037941 - DNA binding domains of transcription factors Oct1 and Sox2, which..

Insulin molecules assembled in a dimer. Insulin is a pancreatic hormone which is central to regulating fat and carbohydrate metabolism in the body.

#26037940 - Insulin molecules assembled in a dimer. Insulin is a pancreatic..

Glyphosate is a widely used broad-spectrum herbicide. Ball and stick model, conventional atom colouring. Stock Photo

#26037937 - Glyphosate is a widely used broad-spectrum herbicide. Ball and..

Taq polymerase is a thermostable DNA polymerase, frequently used for PCR, an important method in biomedical research that enables amplification of short DNA segments.

#19977212 - Taq polymerase is a thermostable DNA polymerase, frequently used..

Green fluorescent protein is a biosensor often used in molecular biology as a reporter of expression. Cartoon model with semi-transparent surface.

#19977204 - Green fluorescent protein is a biosensor often used in molecular..

Methionine amino acid molecule, ball and stick model Atoms colored according to convention

#18850259 - Methionine amino acid molecule, ball and stick model Atoms..

Dopamine is a hormone/neurotransmitter with a variety of functions, most notably reward-driven learning and developing addictive behaviour. Atoms are colored according to convention (hydrogen-white, carbon-gray, nitrogen-blue, oxygen-red).

#18850252 - Dopamine is a hormoneneurotransmitter with a variety of functions,..

Rhodopsin, also known as visual purple, is a pigment in photorecoptor cells of the retina important for the perception of light

#18728121 - Rhodopsin, also known as visual purple, is a pigment in photorecoptor..

Triiodothyronine (T3) molecule, ball and stick model. T3 is a thyroid hormone that affects growth and development, metabolism, body temperature, and heart rate.
Stock Photo

#18728098 - Triiodothyronine (T3) molecule, ball and stick model. T3 is a..

Serine amino acid molecule, ball and stick model Atoms colored according to convention

#18728087 - Serine amino acid molecule, ball and stick model Atoms colored..

Ball and stick model of retinol (vitamin A). Atoms are coloured according to convention (carbon-grey, hydrogen-white, oxygen-red). Vitamin A is essential for vision, skin health, bone growth and teeth mineralization.

#18728080 - Ball and stick model of retinol (vitamin A). Atoms are coloured..

Ball and stick model of DDT, banned incesticide that was widely used in the mid-20th century.

#18665322 - Ball and stick model of DDT, banned incesticide that was widely..

Ammonia molecule, ball-and-stick and space filling models.

#18665314 - Ammonia molecule, ball-and-stick and space filling models.

Guanine is a nucleobase found in DNA and RNA molecules Ball and stick model, atoms coloured according to convention Stock Photo

#18850246 - Guanine is a nucleobase found in DNA and RNA molecules Ball..

Rhodopsin, also known as visual purple, is a pigment in photorecoptor cells of the retina important for the perception of light

#18728122 - Rhodopsin, also known as visual purple, is a pigment in photorecoptor..

Tryptophan (amino acid) molecule, ball and stick model. Atoms colored according to convention.

#18728111 - Tryptophan (amino acid) molecule, ball and stick model. Atoms..

Threonine amino acid molecule, ball and stick model Atoms colored according to convention Stock Photo

#18728107 - Threonine amino acid molecule, ball and stick model Atoms..

Prostacyclin is a hormonethat inhibits platelet activation and acts as a vasodilator Ball and stick model, conventional color scheme Stock Photo

#18728093 - Prostacyclin is a hormonethat inhibits platelet activation and..

Thymine is a nucleobase found in RNA molecules. Ball and stick model, atoms coloured according to convention.

#18728083 - Thymine is a nucleobase found in RNA molecules. Ball and stick..

Ball and stick model of vitamin B7, also known as biotin and coenzyme R. Atoms are coloured according to convention (nitrogen-blue; carbon-gray; oxygen-red; hydrogen-white; sulphur-yellow). Stock Photo

#18728082 - Ball and stick model of vitamin B7, also known as biotin and..

Aspartate (amino acid) molecule, ball and stick model. Atoms colored according to convention.

#18665315 - Aspartate (amino acid) molecule, ball and stick model. Atoms..

Adrenaline (epinephrine) is a hormone that regulates metabolism, heart rate, blood vessel and air passage diameters. Stock Photo

#18665311 - Adrenaline (epinephrine) is a hormone that regulates metabolism,..

Bisphenol A, ball and stick model. BPA is an organic compound found in plastics, use of which has been banned in baby plastic bottles due to estrogenic activity. Stock Photo

#18665310 - Bisphenol A, ball and stick model. BPA is an organic compound..

Viral capsid, space-filling model Darker structures are closer to the core of the particle Stock Photo

#18482843 - Viral capsid, space-filling model Darker structures are closer..

Ball and stick model of penicillin G, also known as benzylpenicillin Atoms are coloured according to convention nitrogen-blue, carbon-gray, oxygen-red, hydrogen-white, sulphur-yellow Stock Photo

#18482689 - Ball and stick model of penicillin G, also known as benzylpenicillin..

Luciferase is an enzyme that produces bioluminescence, often used as a tool in biotechnology. Ball and stick model.

#116247991 - Luciferase is an enzyme that produces bioluminescence, often..

Cartoon model of membrane-embedded rhodopsin(light-sensitive receptor protein found in the rods of the retina).

#116247987 - Cartoon model of membrane-embedded rhodopsin(light-sensitive..

Insulin molecules assembled in a hexamer, coordinated around the zinc atom. Insulin is stored in the body as a hexamer, while the active form is monomeric. Cartoon model with semi-transparent surface.

#116247985 - Insulin molecules assembled in a hexamer, coordinated around..

c-Myc and Max transcription factors bound to DNA. Cartoon model with semi-transparent surface. Stock Photo

#116247984 - c-Myc and Max transcription factors bound to DNA. Cartoon model..

Yeast 20S proteasome particle in complex with the proteasome activator. Proteasomes are protein complexes that perform controlled degradation of other proteins.

#116247983 - Yeast 20S proteasome particle in complex with the proteasome..

Telomerase is an enzyme that adds short DNA repeats to the ends (telomeres) of eukaryotic chromosomes, thereby preventing their shortening. Space-filling model.

#116247982 - Telomerase is an enzyme that adds short DNA repeats to the ends..

Toll-like receptor 13 (TLR13) in complex with bacterial single-stranded RNA, space-filling model, conventional atom colors

#116247981 - Toll-like receptor 13 (TLR13) in complex with bacterial single-stranded..

Nucleosome is a basic unit of DNA packaging in eukaryotic cells, with 147 nucleotides of DNA wrapped around the core built from histone proteins

#116247979 - Nucleosome is a basic unit of DNA packaging in eukaryotic cells,..

P53 transcription factor bound to DNA

#116247978 - P53 transcription factor bound to DNA

CRISPR/Cas9 genome editing/engineering system. Cas9 can be used to cut target DNA at a site complementary to its loaded RNA. Space-filling model, RNA in cyan, target DNA in pink

#116247977 - CRISPRCas9 genome editingengineering system. Cas9 can be used..

Human serum albumin complexed with stearic acid, cartoon model with semi-transparent surface.

#116247975 - Human serum albumin complexed with stearic acid, cartoon model..

Yeast 20S proteasome particle in complex with the proteasome activator. Proteasomes are protein complexes thet perform controlled degradation of other proteins. Stock Photo

#116247974 - Yeast 20S proteasome particle in complex with the proteasome..

Glutaminyl-tRNA synthetase attaches glutamine to its tRNA. Cartoon model with semi-transparent surface. Stock Photo

#116247972 - Glutaminyl-tRNA synthetase attaches glutamine to its tRNA. Cartoon..

Nucleosome with DNA molecule wrapped around it

#116247961 - Nucleosome with DNA molecule wrapped around it

Yeast 20S proteasome particle in complex with the proteasome activator. Proteasomes are protein complexes that perform controlled degradation of other proteins. Space-filling model. Stock Photo

#116247895 - Yeast 20S proteasome particle in complex with the proteasome..

EcoRI is an endonuclease isolated from E.coli, used as a restriction enzyme in molecular biology. Cartoon model with semi-transparent surface. Stock Photo

#116247893 - EcoRI is an endonuclease isolated from E.coli, used as a restriction..

RNA polymerase 2 catalyzes the synthesis of mRNA, snRNA and miRNA precursors from a DNA template

#116247892 - RNA polymerase 2 catalyzes the synthesis of mRNA, snRNA and miRNA..

EF-Tu elongation factor catalyzes the binding of an aminoacyl-tRNA to the ribosome. Cartoon model with semi-transparent surface. Stock Photo

#116247891 - EF-Tu elongation factor catalyzes the binding of an aminoacyl-tRNA..

P53 transcription factor bound to DNA

#116247890 - P53 transcription factor bound to DNA

EF-Tu elongation factor catalyzes the binding of an aminoacyl-tRNA to the ribosome. Cartoon model. Stock Photo

#116247889 - EF-Tu elongation factor catalyzes the binding of an aminoacyl-tRNA..

Myosin heads bound to actin filaments, cartoon model with semi-transparent surface. Stock Photo

#116247888 - Myosin heads bound to actin filaments, cartoon model with semi-transparent..

Luciferase is an enzyme that produces bioluminescence, often used as a tool in biotechnology. Ball and stick model.

#116247887 - Luciferase is an enzyme that produces bioluminescence, often..

Zinc finger is a small protein structural motif important for binding DNA, RNA, proteins and lipids. Cartoon model of three DNA-bound zinc finger motifs, semi-transparent surface.

#116247886 - Zinc finger is a small protein structural motif important for..

Ubiquitin, cartoon model.

#116247885 - Ubiquitin, cartoon model.

Luciferase is an enzyme that produces bioluminescence, often used as a tool in biotechnology. Cartoon model with semi-transparent surface. Stock Photo

#116247884 - Luciferase is an enzyme that produces bioluminescence, often..

Ubiquitin protein, space-filling model. Stock Photo

#116247883 - Ubiquitin protein, space-filling model.

Nucleosome with DNA wrapped around it Stock Photo

#116247881 - Nucleosome with DNA wrapped around it

Hammerhead ribozyme is an RNA molecule that catalyzes targeted RNA cleavage and has therapeutic potential. Space-filling model of the full-length form, conventional atom color codes.

#116247879 - Hammerhead ribozyme is an RNA molecule that catalyzes targeted..

Toll-like receptor 13 (TLR13) in complex with bacterial single-stranded RNA, cartoon model Stock Photo

#116247878 - Toll-like receptor 13 (TLR13) in complex with bacterial single-stranded..

Human topoisomerase I bound to double-stranded DNA. Topoisomerases are enzymes that regulate the winding of DNA helix. Cartoon model with semi-transparent surface. Stock Photo

#116247876 - Human topoisomerase I bound to double-stranded DNA. Topoisomerases..

Telomerase is an enzyme that adds short DNA repeats to the ends (telomeres) of eukaryotic chromosomes, thereby preventing their shortening. Cartoon model, DNA in pink, RNA elongation template in cyan. Stock Photo

#116247875 - Telomerase is an enzyme that adds short DNA repeats to the ends..

Eukaryotic ribosome, protein subunits in violet, RNA subunits in blue, 40S subunit in darker shades. Stock Photo

#116247874 - Eukaryotic ribosome, protein subunits in violet, RNA subunits..

Thrombin is an enzyme active in blood clotting process. Cartoon model with semi-transparent surface. Stock Photo

#116247873 - Thrombin is an enzyme active in blood clotting process. Cartoon..

Human serum albumin complexed with stearic acid, space-filling model. Stock Photo

#116247872 - Human serum albumin complexed with stearic acid, space-filling..

Hepatitis B capsid, space-filling model. Hepatitis B is a viral infectious disease that affects the liver.

#116247757 - Hepatitis B capsid, space-filling model. Hepatitis B is a viral..

microRNA (let7; pink) bound to mRNA (lin-41; cyan). miRNAs are small non-coding RNA molecules important for gene regulation and implicated in cancer, obesity and heart disease.

#116247755 - microRNA (let7; pink) bound to mRNA (lin-41; cyan). miRNAs are..

Hammerhead ribozyme is an RNA molecule that catalyzes targeted RNA cleavage and has therapeutic potential. Space-filling model of the full-length form. Stock Photo

#116247754 - Hammerhead ribozyme is an RNA molecule that catalyzes targeted..

Toll-like receptor 3 (TLR3) ectodomain. Space-filling model, conventional atom colors.

#116247753 - Toll-like receptor 3 (TLR3) ectodomain. Space-filling model,..

DNA helicases are enzymes that separate two annealing DNA strands, an important step in replication, transcription, repair or recombination. Space-filling model, DNA in green.

#116247752 - DNA helicases are enzymes that separate two annealing DNA strands,..

Human hemoglobin in its oxy- state. Cartoon model, heme molecules shown as ball-and-stick.

#116247751 - Human hemoglobin in its oxy- state. Cartoon model, heme molecules..

Cartoon model of membrane-embedded rhodopsin (light-sensitive receptor protein found in the rods of the retina).

#116247750 - Cartoon model of membrane-embedded rhodopsin (light-sensitive..

Oxytocin is a hormone that plays a role in intimacy, social bonding and sexual reproducion. Flattened 3D model.

#116247749 - Oxytocin is a hormone that plays a role in intimacy, social bonding..

Hammerhead ribozyme is an RNA molecule that catalyzes targeted RNA cleavage and has therapeutic potential.Full-length form, cartoon model with semi-transparent surface.

#116247748 - Hammerhead ribozyme is an RNA molecule that catalyzes targeted..

Toll-like receptor 13 (TLR13) in complex with bacterial single-stranded RNA, space-filling model, conventional atom colors

#116247747 - Toll-like receptor 13 (TLR13) in complex with bacterial single-stranded..

Calcium pump embedded in a membrane. Ca pump controls the release of calcium ions from sarcoplasmatic reticulum during muscle contraction and relaxation.

#116247746 - Calcium pump embedded in a membrane. Ca pump controls the release..

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123RF

About 123RF

Features

Blog

Tutorials

Services

Tools

Corporate+

123RF Partners Program

API Value-Added Reseller

Become an Affiliate

Promo Code

Policies

Legal

Licensing

Privacy Policy

Terms of Use

Cookie Policy - 123RF

Security Disclosure Policy

International

Русский язык

Português (PT)

Support

Need help? Contact your dedicated Account Manager

@ 1 866 655 3733

Contact

Support

Connect with Us

Follow us on Twitter

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