研究了2，4-甲苯二异氰酸酯对小鼠的急性经口的毒性以及其对小鼠骨髓嗜多染红细胞微核率的影响。
Studied the acute toxicity effect of 2,4tolylene diisocyanate on mice by mouth and the influence of micronucleus frequency of mice bone marrow.
生理上的自然调控精确地控制着经口摄入并被机体吸收的抗坏血酸的量。
Natural physiologic controls precisely regulate the amount of ascorbate absorbed by the body when it is taken orally.
店员：最简单的途径就是痢疾杆菌通过污染的手、食品、水源等方式传播，最终均经口入消化道使易感者被传染上了。
Shop assistant: the most common way is that dysentery bacteria spread by dirty hands, food or water, finally enter in alimentary tract by the mouth, infecting the receptor.
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