Protein-peptide composition of aqueous-saline extract of Rana ridibunda frog unfertilized eggs - L. N. Tynynyka; Ju. Semenchenko; A. V. Mamontova; O. P. Synchikova; A. V. Shinder; B. P. Sandomirskij (Problems of cryobiology and cryomedicine, 2005)