TY - RPRT TI - Sequential protection-modification method for selective sulfhydryl group derivatization in proteins having more than one cysteine. AU - A Planas AU - J F Kirsch PY - 1990 DO - 10.1093/protein/3.7.625 UR - https://pubmed.ncbi.nlm.nih.gov/2217135/ ID - 2217135 ER -