| dangerous microbe | 1.18 | The brewers boiled the water they used, killing dangerous microbes. | ||
| deadly microbe | 1.05 | And supplies of the deadly microbes needed for research are harder to come by. | ||
| martian microbe | 0.66 | Martian microbes may have trouble surviving on Earth. | ||
| invading microbe | 0.59 | The immune system puts up two general types of defense against invading microbes. | ||
| harmful microbe | 0.53 | This gives harmful microbes the chance to mutate to survive. | ||
| fossil microbe | 0.46 | Farmer knows from experience how hard it is to find fossil microbes on Earth. | ||
| new microbe | 0.46 | Every time an assay is made, new microbes are found. | ||
| resistant microbe | 0.46 | The resistant microbes they create can spread to humans. | ||
| living microbe | 0.39 | It may well be that most of them are produced by living microbes, he said. | ||
| airborne microbe | 0.33 | The sickness moved from room to room, which suggested it was caused by an airborne microbe. | ||
| common microbe | 0.33 | Genetic engineering might also be used to transfer a gene for a toxin into a common microbe. | ||
| fossilized microbe | 0.33 | Were the objects fossilized microbes? | ||
| toxic microbe | 0.33 | Last summer, several bay tributaries suffered the latest outbreaks of a toxic microbe, Pfiesteria piscicida. | ||
| ancient microbe | 0.26 | The genetic analysis of an ancient microbe revealed secrets about how the tree of life is organized. | ||
| different microbe | 0.26 | Three different microbes are thought to contribute to clogged arteries. | ||
| disease-causing microbe | 0.26 | It is effective only against a handful of disease-causing microbes, and does not work in all cases. | ||
| lethal microbe | 0.26 | It also requires drug and background checks on lab workers who handle certain lethal microbes. | ||
| possible microbe | 0.26 | Last year, however, a scientific team reported finding possible fossil microbes in a meteorite from Mars. | ||
| sensitive microbe | 0.26 | The main neutrophil chemoattractant in this enteropathy may be a metronidazole sensitive microbe. | ||
| terrestrial microbe | 0.26 | The higher reaches of the sky may have been contaminated by terrestrial microbes riding on satellites or rockets. |