ranpirnase [ Onconase,P-30 protein, Rana pipiens,P30 protein, Rana pipiens,Pannon ] Pannon is a paritally purified extract of ranpirnase; P-30 is a 15kDa protein isolated from Pannon; it is an anti-tumor amphibian oocyte RNase found in Rana pipiens eggs and early embryos