TY - RPRT TI - Construction and expression of plasmids containing mutated diphtheria toxin A-chain-coding sequences. AU - K S Fisher AU - I H Maxwell AU - J R Murphy AU - J Collier AU - L M Glode PY - 1991 DO - 10.1128/iai.59.10.3562-3565.1991 UR - https://pubmed.ncbi.nlm.nih.gov/1894362/ ID - 1894362 ER -