Recently it has been suggested that in selecting an antibody to detect
an antigen in another species, a search for a matching peptide sequence
may be necessary.  Specifically, we used a rabbit polyclonal antibody
raised to a 14-peptide chain from mouse iNOS, and obtained selective
staining with a reasonable pattern in the sheep.  It was suggested that
since we could not find this a matching sequence in the sheep protein,
the antibody should not be used.  I would greatly appreciate
the comments of the group on the usefulness of this kind of criterion.

Hal Hawkins, UTMB Galveston