肝片形吸虫和鸡蛔虫对神经递质和药物的反应基本上是不同的。
It was found that the responses of liver fluke to drugs were quite different from those of chicken roundworm to the same drugs.
所谓抑制性递质的GABA对肝片形吸虫呈现兴奋作用，而对鸡蛔虫则呈现抑制作用。
GABA is known as an inhibitory transmitter of mammalian CNS, and produced excitation on liver flukes but, on the contrary, produced inhibition on chicken round-worms.
颉颃药印防己毒不能阻断GABA对肝片形吸虫的兴奋效应，但能部分阻断对鸡蛔虫的抑制效应。
It was found that the antagonist picrotoxin was unable to block the liver fluke to the excitatory effect of GABA, while it could partially block the roundworm to the inhibitory effect of GABA.
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