New caerin antibiotic peptides from the skin secretion of the Dainty Green Tree Frog Litoria gracilenta. Identification using positive and negative ion electrospray mass spectrometry: Maclean MJ, Brinkworth CS, Bilusich D, Bowie JH, Llewellyn LE, Doyle JR and Tyler MJ (2006) New caerin antibiotic peptides from the skin secretion of the Dainty Green Tree Frog Litoria gracilenta. Identification using positive and negative ion electrospray mass spectrometry. Toxicon 47:664-675.