Table 2.

Common antibodies used for the characterization of B-cells in dogs and expected reactivities.

Target	Antibody clones	Reactivity
CD18	CA1.4E9	All leukocytes
CD19	4E9	B-cells, including early precursors
CD20	NCD1.2	Mature B-Lymphocytes
	1E4
	6C8
CD21	CA2.1D6	Mature B-lymphocytes
CD22	RFB4	Mature B-lymphocytes
CD25	P4A10	Activated lymphocytes
CD34	1H6	Precursors
CD45	YKIX716.13	All leukocytes
	CA12.10C12
CD44	IM7	All hematopoietic cells
CD79a(cy)	HM57	B-cells, including early precursors
CD79b(cy)	AT107-2	B-cells, including early precursors
IgM	polyclonal	Immature/Mature B-cells
MHC II	YKIX334.2	Monocytes, Histiocytes, Lymphocytes
	CA2.1C12
Ki67 (nuclear)	MIB-1	Proliferating cells

cy, cytoplasmic.