Hypopharyngeal glands, acinus

honey bee, hypopharyngeal glands, acinus

One of acini of hypopharyngeal glands of honey bee worker. After Kheyri (2012) [1]. (scale bar = 50 micrometers)
ARin - actin ring
CaCel - canal cell
SeCel - secretory cell
EApa - end apparatus
HfDct - collecting duct
Nu - nucleus

Each of the acinus consists of 5-20 gland units. Each gland unit (marked red) consists of two cells: canal cell and secretory cell.