| three cefotaximases, ctx-m-9, ctx-m-13, and ctx-m-14, among enterobacteriaceae in the people's republic of china. | of 15 extended-spectrum beta-lactamase (esbl)-producing isolates of the family enterobacteriaceae collected from the first municipal people's hospital of guangzhou, in the southern part of the people's republic of china, 9 were found to produce ctx-m esbls, 3 produced shv-12, and 3 produced both ctx-m and shv-12. eleven isolates produced either tem-1b or shv-11, in addition to an esbl. nucleotide sequence analysis of the 12 isolates carrying bla(ctx-m) genes revealed that they harbored three dif ... | 2002 | 11850241 |