No genomic changes were found , and a CAT reporter gene with the CD18 promoter was inactive in the 3 of them , again suggesting lack of ( a ) transcriptional factor ( s ) necessary for CD18 expression .
no genomic changes were found , and a cat reporter gene with the cd18 promoter was inactive in the 3 of them , again suggesting lack of ( a ) transcriptional factor ( s ) necessary for cd18 expression .
O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O O B-protein_molecule O O