RSPH3 and melanoma: The synthetic antimicrobial peptides Rsp-3 and -6 were tested against four ATCC bacterial species, one multidrug-resistant K. pneumonia strain, and one ATCC yeast species, in addition to human erythrocytes, B16F10 murine melanoma cells, mouse fibroblasts NIH3T3 and MHV-3-infected L929.