TY - RPRT TI - Evolutionary implications of potential frameshift hot-spots, methylation sites, and codon usage differences between genes and between organisms in Escherichia coli and Salmonella typhimurium. AU - C H Clarke PY - 1982 DO - 10.1016/0022-5193(82)90121-7 UR - https://pubmed.ncbi.nlm.nih.gov/6750246/ ID - 6750246 ER -