3d
abstract
activity
anatomy
antigen
background
banner
biology
black
blood
cell
granules
granulocytes
illustration
immune
immunities
immunoglobulins
immunology
infection
inflammation
isolated
leukocyte
lymphocyte
medical
medicine
microbiology
microscopic
neutrophil
nucleus
phagocyte
phagocytic
response
science
structure
system
white