Production of Human Alpha- and BetaInterferons by Human–Rodent Hybrids
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Attempts were made to demonstrate human alpha interferon production in virally induced human-rodent cell hybrids. In all hybrids investigated human beta-interferon production was detected when the relevant human chromosomes were retained, but only low levels of human alpha interferon could ever be detected even when human chromosome 9, which contains at least eight alpha-interferon genes, was present in the hybrid. The detection of human alpha interferon was made possible only by the use of specific antisera to human alpha and beta interferon and the sensitive virus yield-inhibition assay. Evidence is presented for independent regulatory mechanisms governing the expression of human alpha and beta interferons in human-rodent hybrids.
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