a 3.8-kilobase-pair ( kbp ) ecori restriction fragment encompassing the 5 ' end of the human p53 gene , as well as subfragments generated by restriction digests , was cloned upstream of the escherichia coli chloramphenicol acetyltransferase ( cat ) gene and cat activity was assayed in extracts of transfected cells .
C1704837
end
C0086418
human