Andrea Graziani wrote in message ...
>I am looking for a software to do densitometry on gel images already taken
>a camera and saved as TIFF files.
You might use the freeware at http://www.scioncorp.com and combine it with
the gel doc macros at http://rsb.info/nih.gov/nih-image. You might also
subscribe to the nih-image newsgroup and pose the question to the group or
leave a message at support at scioncorp.com.