alveoli
anatomical
anatomy
background
bacterium
biology
blue
body
bronchus
cavity
chest pain
diaphragm
disease
graphic
health
health care
healthcare
heart
highlighted
hospital
human
human bone
illustration
infection
inflammatory
lung
lungs
male
man
medical
medicine
organ
pain
people
pleura
pneumonia
pose
pulmonary
respiratory
respiratory tract infection
scan
science
silhouette
skeleton
system
trachea
vascular
viral infection
xray