A tiny sac which forms part of a gland.
Part of a lobule in the lung.
Acini, general term for a small saclike structure, esp. that found in a gland, acinar, acinic, acinose, acinous.
Each of the minute sacs of which secreting glands are composed, and which usually cluster around the branches of the gland-duct, like grapes on their stem.
The smallest division of a gland; a group of secretory cells surrounding a cavity.