In 2005, PAH enter China companion animal market by launching revolution, a high efficacy parasiticide for dog and cat.

2005年辉瑞动物保健集进入中国宠物市场推出了用于驱除犬猫外寄虫优质产品-大宠爱。

4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.

涡虫是雌雄同，殖系统适于受精。单起源吸虫（单殖纲）大多是鱼外寄虫。