... found: three in theupstream Na channel gene, two between the Na channeland Ig -b genes, one at the transcriptional start site,one in the first intron of the Ig -b gene, four betweenIg -b and ... resulted in the absence of Ig -b mRNA. Three regions except the region in the Na channel gene wereinvolved in the transcription of Ig -b gene. The enhancing activity of DHSsas determined by transient ... sequences controlling human B2 9 gene expression.Blood 87, 666–673.28 Dillon N < /b> & Sabbattini P (2000) Functional gene expres-sion domains: defining the functional unit of eukaryoticgene...