Comparative osteo stimulating activity of the drugs Bio-oss and Ovo-GAP-2 - A. P. Levytskyi; O. A. Makarenko; I. O. Selivanska; V. I. Karyi; M. V. Kara; L. M. Khromahina; O. E. Knava; S. V. Honcharuk (Achievements of biology and medicine, 2014)