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Category:Lymphocytes (view source)

Revision as of 14:26, 13 August 2010

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==[[T cells]]==

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~~[[Image:LH B cells Peyers Patch Histology.jpg|right|thumb|150px|'''B Cells in Lymph node'''©RVC 2008]]~~

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==~~B Cells==~~

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==[[B cells]]==

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~~''Also called B lymphocytes''~~

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~~So named as they were initially found in the~~ [[~~Bursa of Fabricius - Anatomy & Physiology|Bursa of Fabricius]]. They produce antibodies (Ig’s) and are associated with humoral immunity. They represent 20-30% of circulating lymphocytes.~~

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B cells ~~have B cell receptors (BCR), or antigen binding sites. This is [[IgM~~]] ~~when the B cell is immature, changing to [[IgD]] when the cell is mature. B cells also express MHC II, CD9, CD,19, CD20 and CD24.~~

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~~Under antigenic stimulation they differentiate into [[B cell differentiation - WikiBlood#Plasma cells|plasma cells]] and [[B cell differentiation - WikiBlood#Memory cells|memory cells]].~~

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~~B-cells also act as Antigen-Presenting Cells (APCs) by presenting digested fragments to T-cells on [[MHC - WikiBlood#MHC II|MHC II]].~~

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~~For more on B cell differentiation, see [[B cell differentiation - WikiBlood|here]].~~

==Natural Killer (NK) cells==

Bara

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