TY - RPRT TI - An improved positive selection plasmid vector constructed by oligonucleotide mediated mutagenesis. AU - B Nilsson AU - M Uhlén AU - S Josephson AU - S Gatenbeck AU - L Philipson PY - 1983 DO - 10.1093/nar/11.22.8019 UR - https://pubmed.ncbi.nlm.nih.gov/6316281/ ID - 6316281 ER -