阴性的

The bacterium is the bulbiform bacili of negative of coloring of change orchid family name.

为革兰氏染色阴的球状杆。

The test for bacteria was negative.

试验结果是阴的。

Coliform group referred to aerobic or facultative anaerobic gram-negative budless bacillus which could ferment lactose and produce acids and CO2.

大肠群是指能发酵乳糖、产酸产气、需氧和兼厌氧的革兰氏阴芽孢杆。

This method resolved the problem of poor yield of DNA from smut teliospore thick wall, and efficiently avoided the false negative result of PCR.

此法解决了腥黑穗厚壁冬孢子核酸样品制备效率低的难题,有效地避免了PCR检测的假阴反应。