TY - RPRT TI - Novel screening procedure for recombinant plasmids. AU - J Telford AU - P Boseley AU - W Schaffner AU - M Birnstiel PY - 1977 DO - 10.1126/science.318763 UR - https://pubmed.ncbi.nlm.nih.gov/318763/ ID - 318763 ER -