alveoli
alveolus
anatomy
artwork
bacilli
bacillus
bacteria
biology
black
blood
breathe
cell
cough
disease
engraved
ghon
granuloma
health
healthy
historic
history
human
illustration
infection
initial
latent
lesion
lung
medical
medicine
mycobacterium
pathology
pulmonary
respiratory
science
tissue
trachea
tubercle
tuberculosis
vintage
wall
white
world tuberculosis day