The estrogen-dependent and tissue-specific regulation of the Xenopus laevis vitellogenin gene B1 promoter has been studied by lipid-mediated DNA transfer into Xenopus hepatocytes in primary culture .
the estrogen-dependent and tissue-specific regulation of the xenopus laevis vitellogenin gene b1 promoter has been studied by lipid-mediated dna transfer into xenopus hepatocytes in primary culture .
O O O O O O O B-multi_cell I-multi_cell B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O B-cell_type B-cell_type O O O O