A novel expression vector for transfection of bovine MHC class I genes.

A vector is described for the expression of genomic or cDNA copies of bovine major histocompatibility complex (MHC) class I genes in transfected mouse Ltk- cells. Class I gene fragments are amplified by the polymerase chain reaction, using primers in conserved parts of exon 2 and the 3'-untranslated region of the gene. Amplified class I gene fragments can then be subcloned into the expression vector, pBoLA-21, which contains the necessary 5'- and 3'-sequences for correct expression. The vector was tested by subcloning and expressing genomic and cDNA clones.