Helicobacter pylori is a spiral Gram's negative bacterium, living in microaerophilic environment.
幽门杆菌是一只革兰氏阴性螺旋菌，生活在微需氧的环境下。
To evalute the release of endotoxin from Gram negative bacterium after incubated with different types of antibiotics on sub MIC.
研究不同种类亚抑菌浓度抗生素与细菌释放内毒素的关系。
The result suggests that the small molecule bioactive peptide in the skin of Forest Frog has ability against gram-positive bacterium and gram-negative bacterium.
试验结果表明：林蛙皮肤中小分子活性肽对革兰氏阳性细菌、革兰氏阴性细菌具有一定的抗菌活性。
Results The prevalence of Hospital Acquired low respiratory tract infection in the aged people was very high, gram-negative bacterium was the main pathogenic bacteria.
结果老年人院内下呼吸道感染发生率高，以革兰氏阴性杆菌为主要致病菌。
The test results of the bacterium, fungi, virus, mycoplasma were negative.
细菌、真菌、病毒、支原体检测阴性。
Positivly charged material carries stronger positive charge on its surface and has a stronger affinity for bacterium, virus and bacterial endotoxin which cany negative charge.
正电性荷电材料表面带有较强的正电荷，对负电性的细菌、病毒和细菌内毒素有较强的亲和作用。
Results: in observed group, all bacterium culture in the front of catheter was negative.
结果：导管前端细菌培养皆为阴性。
And bacterium of negative of change orchid family name is not sensitive to penicillin, and wait to streptomycin, chloromycetin sensitive.
而革兰氏阴性菌则对青霉素不敏感，而对链霉素、氯霉素等敏感。
Stool bacterium cultures were negative;
大便细菌培养均为阴性；
Stool bacterium cultures were negative;
大便细菌培养均为阴性；
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