The royal jelly had no effect on the leukemia cells, but it had dramatic effects on sarcoma cells. Royal jelly, however, has not lived up to expectations that it is an important anti-aging substance. But it is not without medical interest. Royal jelly consists of an emulsion of proteins, sugars, lipids and some other substances in a water base. Proteins make up about 13% of royal jelly. Most of the proteins comprise a family called major royal jelly proteins.
Cells were first discovered by Robert Hooke in 1663.
The first multi-cellular life probably arise around 1.2 billion years ago, in geological terms almost overnight, while the landmass of the Earth was still a single continent called Rodinia. It presumably started out as a sort of symbiosis, a loose cooperation between single cells that became more and more complex.