What is Granule (cell biology)?
In [[cell biology]], a '''granule''' can be any structure barely visible by light microscopy. The term is most often used to describe a [[Secretion|secretory]] [[Vesicle (biology)|vesicle]]. == Leukocytes == A group of [[leukocyte]]s called [[granulocyte]]s contain granules and play an important role in the immune system. The granules of certain cells, such as [[Natural killer cell]]s, contain components which can lead to the [[lysis]] of neighboring cells. == Platelets == The granules of [[platelets]] are classified as [[dense granule]]s and [[Platelet alpha-granule|alpha granule]]s. {{biology-stub}} [[Category:Cell biology]]