Lysine some more.

[Chris Geatch <cig100@unix.york.ac.uk>]

There are 20 amino acids, 12 (according on who you talk to) are 
non-essential and are produced by the nitrogen metabolism system of the 
human body, there are only 8 essential ones.  Looks like someone's ninth 
grade biology was wrong.

Also, while we're on the subject of inaccuracies in JP, you can tell when 
the T.rex model and the T.rex graphics are used by looking at the side of 
it's mouth, in the model the flaps of muscle fold, whereas in the 
computer graphic they 'contract'.  It bothered me as a biologist.