alveolar
alveoli
breath
breathing
bronchioles
bronchitis
cancer
cardiogram
care
chronic
collapse
disease
emphysema
health
healthcare
healthy
illness
lung
medical
medicament
medicine
obstructive
phonendoscope
pills
pneumonia
pulmonary
pulse
respiration
respiratory
sickness
smoker
stethoscope
syringe
text
tissue
treatment
vaccine