FIELD: medicine, physiology, pathophysiology. SUBSTANCE: biomaterial is reduced to fragments, the residue obtained is removed with subsequent estimation of surface-active substance by stalagmometric technique, placenta is used as biomaterial that is pre-stored for 2-4 hours at 0-4 C, reduction is fulfilled with homogenization in physiological solution. EFFECT: simplified and more available method with minimal expenses to conduct researches. 2 tbl
