4Kruse P. E patterson M. K Tissue culture:methods and applications CMJ New York and London: Academic press, 1973. 527.
5Earnshaw D. L etal Mode of antiviral action of per in MRC--5 cell infected with HSV--1.HSV- 2 and VZV [T]. Antimicob Agent schmother,1992, (36) :2747--2757.