| characterization of lactococcus lactis phage antigens. | phage phi 197 is representative of a widespread lactococcal phage group characterized by a particular morphology (prolate head with a noncontractile tail). in order to develop an immunoenzymatic phage detection test, fusion proteins containing beta-galactosidase fused to epitopes of phage phi 197 structural proteins were constructed by cloning random dna fragments from the phage genome upstream of a lacz gene on a plasmid vector. recombinant plasmids containing certain fragments encoded the synt ... | 1992 | 1514794 |