for ranatuerin-2CSa, which makes analogs of naturally occurring peptides that lack significant hemolytic activity. Since the strength of the blood thinning properties is greatly reduced, it is almost harmless to humans. References Blaustein, A. R., T. S. Garcia, D. J. Paoletti. Correlated trait response: comparing amphibian defense strategies across a stress gradient. Canadian Journal of Zoology Vol. 87 Issue 1. (Jan 2009):41-49. Briggs, Jeffrey L. and Robert M. Storm. “Growth and Population Structure of the Cascade Frog, Rana cascadae Slater” Herpetologica, Vol. 26, No. 3 (Sep. 1970): 283-300 Case, Susan M. “Biochemical Systematics of Members of the Genus Rana Native to Western North America” Systematic Zoology, Vol. 27, No. 3 (Sep., 1978): 299-311 Conlon, J. Michael, Anusha P. Subasinghage, Chandralal M. Hewage. “Conformational analysis of the broad-spectrum antibacterial peptide, ranatuerin-2CSa: Identification of a full length helix–turn–helix motif”. Proteins & Proteomics. Vol. 1784 Issue 6 (June 2008):924-929 Conlon, J. Michael, et al. “Peptide defenses of the Cascades frog Rana cascadae: implications for the evolutionary history of frogs of the Amerana species group”. Peptides Vol. 28 Issue 6. (June 2007):1268-1274 Davidson, Carlos. Booklet to the CD Frog and Toad Calls of the Pacific Coast - Vanishing Voices. Cornell Laboratory of Ornithology, 1995. (2005): Phylogeny of the New World true frogs (Rana). Mol. Phylogenet. Evol. 34(2): 299–314. PDF fulltext. (2007) Constraints in naming parts of the Tree of Life. Mol. Phylogenet. Evol. 42: 331–338. Kleiner, Kurt. “Multiple killers”. New Scientist. Vol. 165 Issue 2227 (2006): 16 Rollins- Smith, Louise, et al. “Antimicrobial Peptide Defenses in Amphibian Skin.” Integrative and Comparative Biology. 45 (2005):137–142 Slater, James R. “Description and Life-History of a New Rana from Washington. Herpetologica.Vol. 1, No. 6 (Mar. 30, 1939): 145-147+149 External links Western Soundscape Archive - Cascades Frog recordings Rana (genus) Amphibians described in 1939 Amphibians of the United States Amphibians of North America Taxonomy articles created by Polbot