3d
air
alveoli
alveolus
anatomical
anatomy
bacteria
biology
body
bordetella
breathing
concept
conceptual
escherichia coli
health
human
illustration
infection
internal
klebsiella pneumoniae
legionella
legionnaires disease
lungs
medical
medicine
microbe
microorganism
mycrobacterium
pathogen
pathology
pertussis
physiology
pneumonia
pneumophila
pseudomonas aeruginosa
realistic
respiration
respiratory
rodshaped
science
system
tuberculosis
whooping cough