The laccase activity of transformant GSb with lacB reached .×0~U/L after -day culture and the laccase activity of tranlacB的转化子GSb在第 天酶活达到 .×0~U／L，lacC的转化子GSc发酵9天的酶活为.x0~U／L。
Studies on Reversion of a Transformant Line and Loss of Exogenous ras Oncogene after Treatment with an Inhibitor of PARPPARP酶抑制剂诱导转化细胞逆转及外源ras癌基因丢失的研究