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The most common simplified overview description of the B cell differentiation pathway involves the following steps: an antigen interacts with the corresponding surface membrane immunoglobulin after which the B cell begins expressing receptors for growth factors secreted by T cells (BCGFs and IL-2), after these factors bind, the lymphocytes ...
B cell activation: from immature B cell to plasma cell or memory B cell Basic B cell function: bind to an antigen, receive help from a cognate helper T cell, and differentiate into a plasma cell that secretes large numbers of antibodies. B cell activation occurs in the secondary lymphoid organs (SLOs), such as the spleen and lymph nodes. [1]
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A - stem cell; B - progenitor cell; C - differentiated cell; 1 - symmetric stem cell division; 2 - asymmetric stem cell division; 3 - progenitor division; 4 - terminal differentiation Français : Diagramme de la division et de la différenciation des cellules souches.
This cytokine is expressed in B cell lineage cells, and acts as a potent B cell activator. It has been also shown to play an important role in the proliferation and differentiation of B cells. [7] BAFF is a 285-amino acid long peptide glycoprotein which undergoes glycosylation at residue 124.
Activates B-cells and NK cells. IL-3 – Stimulates production of all non-lymphoid cells. IL-4 – Growth factor for activated B cells, resting T cells, and mast cells. IL-5 – Induces differentiation of activated B cells and eosinophils. IL-6 – Stimulates Ig synthesis. Growth factor for plasma cells. IL-7 – Growth factor for pre-B cells.
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The process of immunological B-cell maturation involves transformation from an undifferentiated B cell to one that secretes antibodies with particular specificity. [1] This differentiation and activation of the B cell occurs most rapidly after exposure to antigen by antigen-presenting cells in the reticuloendothelial system, and under modulation by T cells, and is closely intertwined with ...