... Miklukho-Maklaya 16/10, Moscow, 117997, Russia, +7(495)3366455, alexei@nmr.ru . ... Analysis of PS microdistribution in tissues as a function of time after PS injection (topical or oral application) helps to characterize a selectivity of PS accumulation in tumor cells and other tissue structures; to reveal correctly a maximum of time profile of its tumor accumulation and to recognize the features of PS tissue distribution (spatial and temporal) at different ways of PS application. ...