transitional stage B cell quantity transitional stage T2 B cell morphology trait transitional stage T2 B cell quantity 2010-01-27T01:14:05Z T2 B cell number The proportion or number of a type of transitional stage B cell that has the phenotype surface IgM-positive, surface IgD-positive, CD21-positive, CD23-positive, CD62L-negative, and is located in the splenic B follicles. csmith Trait.ontology transitional two stage B-cell number VT:0009926 transitional two stage B lymphocyte number transitional two stage B-lymphocyte number T2 stage B cell number