沙门氏菌并没有造成母鸡生病，在鸡蛋生下来之后，有可能通过蛋壳表面的气孔被含沙门氏菌的排泄物污染。
SE doesn't make the hen sick. It is also possible for eggs to become infected by Salmonella Enteritidis fecal contamination through the pores of the shells after they're laid.
位于皮肤表面的小孔，毛发就是由此长出的，皮脂腺分泌的皮脂也是通过毛孔排泄到皮肤表面的。
The tiny shaft in the skin through which a hair grows, and sebum is excreted from sebaceous glands to the surface of the skin.
AM吞噬后尾蚴排泄颗粒，并可见am粘附于后尾蚴表面。此粘附现象以加入成虫感染组或囊蚴感染组的血清较为明显。
AM engulfed the excretory particles and adhered to the surface of metacercariae and the adherence could be enhanced by immune serum.
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