proacrosomal granules

pro·ac·ro·so·mal gran·ules

small, enzyme-rich granules appearing in vesicles of the Golgi apparatus of spermatids; they coalesce into a single acrosomal granule contained within an acrosomal vesicle.

pro·ac·ro·so·mal gran·ules

(prō-ak'rō-sō'măl gran'yūls)
Small, carbohydrate-rich granules appearing in vesicles of the Golgi apparatus of spermatids; they coalesce into a single acrosomal granule contained within an acrosomal vesicle.

proacrosomal granules

precursors of the acrosomal vesicle in the Golgi complex of the spermatid.