Zitat des Tages von Frank Macfarlane Burnet:
Human insulin differs from other mammalian types by having a different C-terminal amino acid on the B chain. The immunological difference between beef insulin and human insulin, which is presumably responsible for the antigenicity of the former in some human beings, is thus limited to very a small portion of the whole molecule.
I like to think that when Medawar and his colleagues showed that immunological tolerance could be produced experimentally, the new immunology was born.
Today and always, there will be an obligation to pass on to the new generation the tradition of liberal scholarship - scientific or in the humanities - and to bring the understanding of things and human actions to everyone.
Serum albumin is a well-defined protein, but no laboratory has yet attempted to ascertain its full chemical structure.