False-colour TEM of a human plasmocyte

False-colour TEM of a human plasmocyte

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Caption: False-colour transmission electron micrograph (TEM) of a human plasmocyte. Plasmocytes are mature B-lymphocytes (white blood cells) that synthesize & secrete the antibodies of the immune system. Characteristic of a plasma cell is the parallel array of the rough endoplasmic reticulum, (red, at left), the cisternae (elements) of which become dilated with antibodies (immunoglobulins). Antibodies produced by a single plasma cell are of one specificity and immunoglobulin class. Another typical feature is the quantity of heterochromatin (red) which adheres to the inner nuclear membrane x2,800 at 35mm size.

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Keywords: anatomy, antibody production site, b-lymphocyte, cells, endoplasmic reticulum, false-coloured, heterochromatin, human body, immune, mature, plasma cell, plasmocyte, rough, rough endoplasmic reticulum, white blood cell

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