alveolar walls
alveoli
alveolus
cell
congestion
eosin
hematoxylin
hemorrhagic
histology
infarct
infarction
ischemic
lung
magnification
medical
medicine
micro
micrograph
microphotograph
microscope
microscopic
microscopy
necrosis
necrotic
passive
pathohistology
pathology
photo
photomicrograph
pulmonary
stain
tissue
vascular