integumentary system

1. The effect of bacterial inducement on the ultrastructure integumentary system of earthworm ( Eisenia fetida) was studied.
   以赤子爱胜蚓（Eiseniafetida）为实验动物，研究了细菌诱导（浸浴诱导和注射诱导）对蚯蚓体表超微结构的影响。
2. The median line of daily medicine cost of operations on the digestive system and the integumentary system keeped at a high level in the period of 1~ 6 d after operations.
   消化系统和体被系统手术在手术当日及术后1～6d内的日药费中位数变化维持在较高的水平。

noun

1. the skin and its appendages