Blood

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Peripheral Blood

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Immature B Cells

Embryonic Index:
Bld.Bld.ImBCs

Immature B cells are precursors of B cells that have a critical role in prevention of auto-immune responses. In most mammals, they are produced in the bone marrow, where they are tested for auto-reactivity, and only then migrate to secondary lymphoid tissues (e.g. spleen, lymph nodes, etc.), where some of them differentiate into mature B cells.