Home
PLUS
AI Generator Tools
New
AI Image Generator
Delivering creativity at your imagination.
New
AI Image Upscaler
Scale your images up to 4x a click!
New
AI Generative Fill
Remove and replace objects in seconds!
New
AI Background Blur
Blur backgrounds to make subjects stand out!
AI Background Remix
Professional backgrounds for your products.
AI Image Extender
Extend your images to different ratios.
AI Writer
Best writing companion for the digital age.
AI Background Remover
Remove unwanted backgrounds easily.
123RF PLUS
Get creative solutions powered by cutting-edge AI tools.
Go PLUS
We have 2 new AI tools!
Check out AI Image Upscaler and AI Generative Fill now!
OK
Free Images
Stock
Photos
Vectors
Video
Audio
Fonts
Corporate+
Pricing
Support
en
English
Deutsch
Español
Français
Magyar
Italiano
日本語
한국어
Nederland
Język polski
Português (PT)
Русский язык
简体中文
繁體中文
Türkçe
Login
Go unlimited
Video
Options
PREMIUM
All Images
Photos
Vectors
Video
Audio
Fonts
FREE
PLUS
Viral respiratory infections (VRIs) include colds, the flu and bronchiolitis.
Play Video
Remaining Time
-0:00
Play
Progress: NaN%
Playback Rate
1.00x
Non-Fullscreen
4K UHD
MOV
3840 x 2160
24.13fps
29.65 MB
Download
eascience
Follow
Preview
Share
X
Facebook
Pinterest
Report
Why are you reporting this?
Intellectual Property - Copyright and Trademarks
Violates 123RF Policies
Repetitive/Irrelevant Content
Inappropriate/Distasteful Content
Corrupted Content
Please describe the issue in detail.
Cancel
Submit
125088491
7.79s
Stock Video
KEYWORDS
airflow
airway
alveoli
alveolar
anatomical
anatomy
asthma
asthmatics
biomedical
blood flow
breath
breathing
bronchi
bronchial lining
bronchopulmonary segment
bronchus
karbon dioxide
cell
cellular
chest tightness
chronicler
co2
constricting
contracting
difficulty
disease
excess mucus
expanding
gas exchange
human scanned data
immunology
inflamed
inflammatory response
mucosa
mucosal lining
mucous
muscle fiber
oxygen
pathological
pathology
pulmonary
respiratory structure
respiratory system
respiratory tract
tube