Royal Jelly Contains Complex Steroidal Composition 

Compositions of Royal Jelly II. Organic Acid Glycosides and Sterols of
the Royal Jelly of Honeybees (Apis mellifera)
Chem. Pharm. Bull. 55(10) 1528-1531 (10/1/2007)
http://apitherapy.blogspot.com/2007/10/royal-jelly-contains-complex-steroidal.html

Royal jelly is a secretion from the hypopharyngeal and mandibular glands
of worker bees, and it is the exclusive food of the queen bee for the
entire span of both her larval and adult lives...This study showed that
royal jelly contains a very complex steroidal composition…

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