the first intron of the human alpha 1 ( i ) collagen gene contains a negatively acting element that inhibits transcription of the chloramphenicol acetyltransferase gene driven by either a collagen or an sv40 basal promoter ( bornstein , p. , mckay , j. , morishima , j. , devarayalu , s. , and gelinas , r. e. ( 1987 ) proc . natl . acad . sci . u. s. a . 84 , in press ) .
C1333079
collagen gene
C0009325
collagen