<正> The plasmid p~(SV-Luc20)or the mRNA of luciferase gene transcribed from p~(SP64-Luc12)was introduced intothe nucleus or cytoplasm of Xenopus oocytes at sta
<正> Female-specific serum protein(FSSP)is normally present in the sera of female fish,but it is notfound in males.However,estradiol benzoate(EB)was found to in