TY - RPRT TI - Substitution mutation in bacteriophage lambda with new specificity for late gene expression. AU - I Herskowitz AU - E R Signer PY - 1974 DO - 10.1016/0042-6822(74)90246-3 UR - https://pubmed.ncbi.nlm.nih.gov/4415976/ ID - 4415976 ER -