quantitate a computer image of a gel eletrophoresis or western blots.

[Itabajara da Silva Vaz Junior]

Please,
I need software to quantitate a computer image of a gel eletrophoresis or western blots.
Are there freeware software?
Thanks for your help
sincerely,
ita

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Itabajara da Silva Vaz Junior
Centro de Biotecnologia do RS 
Universidade Federal do Rio Grande do Sul
C.P. 15005    Av. Bento Goncalves 9500
Predio 43421 - Campus do Vale
91501-970  Porto Alegre RS   Brasil
Fone (51) 33166078    Fax (51)3316-73-09
[00 55 51 3316 7309]
http://www.ufrgs.br/depbiot/201/cbt201.htm
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