Plasma Cell

This image illustrates a Plasma cell. Plasma cells are a differentiated form of a B lymphocyte, that secrete antibodies. Their appearance is quite characteristic: they have basophil cytoplasm and an excentric nucleus, in addition to a pale zone in the cytoplasm that contains an extensive Golgi apparatus. After dividing for around five days, mature B cells are able to develop into plasma. The plasma cells are larger and agranulocytes, and have an eccentrically located nucleus with the chromatin clumped in a characteristic cartwheel pattern.

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