lymphocyte
basophil
plasma cell
megakaryocyte
antigenpresenting cell
mast cell
macrophage
platelets
erythrocyte
antigen
neutrophil
processed antigen
eosinophil
antibodies
MHC class I
MHC class II
CD8
CD4
T-cell receptor
Fc receptor
becomes
bacteria
virus
complement system molecules
LFA-I
ICAM-I
B7
CD28
TNF receptor family domains
stimulates/enhances
complement control protein (CCP) domains
tyrosine kinase
Ig super family domains
inhibits/kills