Lymphocyte

Cell description:
Size: 10-16 µm
Nucleus: round or slightly indented with condensed and cloddy chromatin, usually invisible nucleolus
Cytoplasm: scanty, weakly basophilic, may have small numbers of azurophilic granules
Morphologically functional subset of lymphocytes cannot clearly be distinguished.
Function: recognize and eliminate threats to the body. Lymphocytes of the innate immune system deliver an immediate response to viral attack. Lymphocytes of the adaptive immune system are specific to a particular antigen.