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specific granule (GO:0042581)
Granule with a membranous, tubular internal structure, found primarily in mature neutrophil cells. Most are released into the extracellular fluid. Specific granules contain lactoferrin lysozyme, vitamin B12 binding protein and elastase.
General
secretory granule (GO:0030141)
References
gene ontology: GO:0042581
PMID: 7334549