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Hypopharyngeal glands, acinus

honey bee, hypopharyngeal glands, acinus

One of acini of hypopharyngeal glands of honey bee worker. After Kheyri (2012) Novel actin rings within the secretory cells of honeybee royal jelly glands,
, Volume 69, p.1032-1039, (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.