Boffins create super-muscular 'Hulk' mice: Humans next:
"Topflight biology brains say they have identified a key protein, the furtling of
which could allow massively increased muscular development and strength in
human beings. Genetic manipulation of the "Grb10" compound has already been
tried out in mice, producing "hyper-muscular" rodents capable of almost super-
murine feats."
"The scientists thus far are viewing potential Grb10 tweaking as a method for
helping human patients to battle muscle wasting diseases, but there can be little
doubt that the techniques - if successful - would also be abused by the
bodybuilding and rogue-secret-military-special-operations-organisation communities -
and indeed perhaps by the time-poor or lazy."
See:
http://www.theregister.co.uk/2012/09..._mousey_hulko/