TY - CONF T1 - PHOSPHOROTHIOATE BASED MUTAGENESIS OF SINGLE AND DOUBLE-STRANDED DNA VECTORS JO - SITE-DIRECTED MUTAGENESIS AND PROTEIN ENGINEERING PY - 1991/01/01 AU - OLSEN DB AU - SAYERS JR ED - SP - 171 EP - 179 Y2 - 2024/12/22 ER -