Scientists have discovered a way to make worker bees produce an enhanced version of royal jelly (RJ) – the super-nutritious substance that dictates whether larvae become workers or queens, and that is also renowned as a health supplement for people. Chia-Nan Chen and colleagues explain that royal jelly is a thick liquid made up of proteins, sugars and fats that is secreted by glands in the throats and jaws of worker bees and fed to larvae.
