Possible function(s) proposed in the literature for Paramecium trichocysts have been controversial for a long time. The oldest hypothesis, defence against protozoan predators, has now obtained support from experiments with Dileptus as well as by our observation of a vigorous lateral displacement of cells due to synchronous, massive local trichocyst expulsion. Recently discovered secretory lectins could also operate in defence or improve the availability of food organisms. Other hypotheses on trichocyst function - even if they appeared unlikely to us a priori-have also been analyzed experimentally, but no convincing evidence in favour of any of them could be found.

译文

长期以来,文献中提出的草履虫三毛囊的可能功能一直存在争议。最古老的假设是防御原生动物的掠食者,现在已经从Dileptus的实验以及我们观察到由于同步,大量的局部三毛囊排出而导致细胞的剧烈横向位移中获得了支持。最近发现的分泌性凝集素也可以起到防御作用或改善食物生物的可用性。关于三毛囊功能的其他假设-即使在我们看来似乎不太可能-也已通过实验进行了分析,但没有令人信服的证据支持其中任何一个。

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