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C3
complement factor
C3a
Small fragment of complement factor C3
C3b
Large fragment of complement factor C3
CD
cluster of differentiation, nomenclature system refering to surface markers on hematopoietic cells
CD14
receptor on myelomonocytic cells, binds to a complex of lipopolysaccharide and lipopolysaccaride binding protein (LBP)
CD20
receptor on B cells, oligormers may form a calcium channel
CD25
Aon various cells of the immune system, alpha chain of the IL-2 receptor
CD3
on thymocytes and T cells: associated with the TCR
CD4
on T cell subsets, monocytes, macrophages, coreceptor binding to MHC class II molecules
CD8
on T cell subsets and thymocyte subsets, coreceptor binding to MHC class I molecules
CD95
Also termed Fas or APO-1; expressed on many cell types, death receptor, involved in apoptosis
CD95L
ligand for CD95 (also called Fas-ligand)
cDNA
complementary DNA: artificial DNA strand, complementary to isolated RNA and synthesized by viral reverse transcriptase
CFSE
carboxyfluorescein diacetate succinimidyl ester: used for cell labeling
CRE recombinase
viral enzyme, responsable for recombination of the bacteriophage P1 genome
CTL
cytotoxicT lymphocytee
51CR
chromium, radioactive isotype