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。

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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。

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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。

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