| genetic variation of a disintegrin gene found in the american copperhead snake (agkistrodon contortrix). | disintegrins are small, non-enzymatic proteins produced in snake venom. pcr and dna sequencing analysis of genomic dna for all subspecies of the copperhead snake (agkistrodon contortrix) were analyzed for the presence of a disintegrin gene. four samples each of the subspecies: a. c. contortrix, a. c. laticinctus, a. c. mokasen, a. c. phaeogaster, and a. c. pictigaster were collected from different locations across their geographic range and analyzed. a single pcr fragment from each sample was ob ... | 2006 | 16546330 |