10 Million cells / vial. B Cells express CD19 from very early stages, this expression is only lost upon maturation into plasma cells. After maturing, the B cells migrate to secondary lymphatic organs and are subsequently activated directly by an antigen or through an antigen presenting cell. At this point, they either become memory B cells or plasma B cells. Each B cell gives rise to a single species of antibody. First Choice Bio’s Healthy Human Donor Peripheral Blood CD19+ B cells are isolated from peripheral blood mono-nuclear cells by either positive or negative immuno-magnetic selection, depending upon your needs. All peripheral blood is collected in ACDA by Leukapherisis from fully consented donors that tested negative for HIV, HBV, and HCV.

All protocols are IRB approved.

Products sold or distributed by First Choice Bio or QuickCells.com are intended and labeled for "Research Use Only" and are never to be used in humans, in human trials or used in a manner inconsistent with "Research Use Only" labeling.

And if you can’t find what you are looking for or for Technical Support and additional Laboratory Services: Please call us on +1-707-333-0902 or email us at info@firstchoicebio.com.

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For general inquiries you can call us on +1-707-333-0902 or email us at info@firstchoicebio.com.

We are happy to answer all your questions.

Prices may vary without notice.