“…This fatty acid was first isolated from queen bee jelly by Townsend & Lucas (1940); its structure has been elucidated by Barker, Foster, Hodgson & Lamb (1959) and by Barker, Foster, Jackman & Lamb (1959). It was inactive in doses of 10-100 ,ug of the sodium salt, but slightly potentiated irin contractions.…”