exocytosis | establishment of localization | platelet degranulation | cellular process | secretion | localization | secretion by cell | vesicle-mediated transport | regulated exocytosis
secretory granule | cytoplasmic vesicle | cell | cytoplasmic vesicle lumen | cytoplasm | intracellular organelle | platelet alpha granule | secretory vesicle | endomembrane system | vesicle | extracellular region | membrane-bounded organelle | organelle | membrane-enclosed lumen | secretory granule lumen | intracellular vesicle | intracellular | platelet alpha granule lumen | vesicle lumen