... Incubation with CP-870, 893 activated B cells, including both memory and naïve B cells, as demonstrated by upregulation of < /b> CD86, CD70, CD40, and MHC class I and II. CP-870, 893 - activated B cells ... including both memory and naïve B cells asdefined by the presence or absence of < /b> CD27 expression.We studied the effect of < /b> CP-870, 893 on B cell activation< /b> and B cell stimulation of < /b> T cells, and we ... Clinically, for patientsreceiving CP-870, 893 , there may be a link between the ability of < /b> CP-870, 893 to activate B cells and the rapid (buttransient) depletion of < /b> CD 19+ B cells from circulationafter...