Agranular leukocyte

From Biology-Online Dictionary | Biology-Online Dictionary


noun, plural: agranular leukocytes

A leukocyte lacking apparent cytoplasmic granules under a microscope


Leukocytes may be classified as either granular or agranular in terms of cytoplasmic granules. Agranular leukocytes lack the apparent granules when viewed under a light microscope. In comparison, granular leukocytes have evident granules in their cytoplasm. Although agranular leukocytes seem to lack granules they do, in fact, have non-specific azurophilic granules. However, these granules are much less evident under the light microscope.

Agranular leukocytes include mononuclear leukocytes such as lymphocytes and monocytes.

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