has_not_completed has plasma membrane part develops_from develops from develops from has high plasma membrane amount has_high_plasma_membrane_amount has_not_completed immature B cell transitional stage B cell An immature B cell of an intermediate stage between the pre-B cell stage and the mature naive stage with the phenotype surface IgM-positive and CD19-positive, and are subject to the process of B cell selection. A transitional B cell migrates from the bone marrow into the peripheral circulation, and then to the spleen. T2 B cell T3 B cell T1 B cell transitional stage B lymphocyte transitional stage B-lymphocyte This cell type is compatible with the HIPC Lyoplate markers for 'transitional B cell'. transitional B cell cell transitional stage B-cell B cell, CD19-positive mature B cell differentiation IgM immunoglobulin complex Homo sapiens Homo sapiens membrane-spanning 4-domains subfamily A member 1 ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1 signal transducer CD24