Human Proteins Produced in Hens' Eggs

Hens at the Roslin Institute in Scotland have been genetically modified so that complex biomolecules important in human health care are laid in their eggs. The hens produced the antibidy miR24, which is used to treat melanoma, intermixed with the main protein found in the egg white. This trait has been shown to carry on to at least three generations following the genetic modification, and it does not harm the chickens' health. Since each egg produces a rather large number of these biomolecules, commercial sale of this product would be possible based on quantity issues, although it still has to be approved for sale.

http://www.rsc.org/chemistryworld/News/2007/January/15010701.asp