实验结果表明松材线虫本身不产生毒素，在荧光假单胞菌培养液的无细胞滤液中加入无菌松材线虫未能显著改变其毒性。
Results also showed that pine wood nematode itself neither produced phytotoxin nor affected the toxicity of extracts from the culture of bacterium after the addition of it.
该菌产生的毒素是一类极性较大的非蛋白类物质，活性碳能对其进行吸附； 该毒素能用甲醇将其从培养液中较好地提取出来。
The produced toxin, which could be adsorbed by activated charcoal and be fully extracted by methanol from its culture liquid, was not a kind of protein material.
类毒素经过处理后已消除其毒素特性的一种物质，但仍保留有激发产生抗毒素的能力，用于免疫中。
A substance that HAS been treated to destroy its toxic properties but retains the capacity to stimulate production of antitoxins, used in immunization.
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