| 单词 | r factor |
| 释义 | R factor in American English resistance plasmid R factor in American Englishnoun a genetic component of some bacteria that provides resistance to antibiotics and can be transferred from one bacterium to another by conjugation Also called: resistance transfer factor, RTF Word origin [1960–65; r(esistance) factor]This word is first recorded in the period 1960–65. Other words that entered Englishat around the same time include: disco, parvovirus, pop art, proxemics, zip code |
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