黑白照片玻璃上光液的成分之一，作用是增加上光液的粘度及其在照片表面上的附着力。
画师把它们跟动物胶和牛胆汁混合，以使颜色的光泽长存。
They are mixed with animal glue and ox bile to make the lustre stay.
目的：建立牛胆汁中胆酸HPLC含量测定的方法，为制定中药炮制辅料牛胆汁的药用标准打下基础。
Objective:to establish the assay method to detect the cholalic acid in bilis bovina by HPLC to establish the base to institute drug standard of processing drugs adjuvant bilis bovina.
一种结晶状酸，C26 H 45 NO 7s，涉及脂肪的乳化作用，在人、牛和其他哺乳动物的胆汁中作为钠盐出现。
A crystalline acid, C26H 45no 7s, involved in the emulsification of fats and occurring as a sodium salt in the bile of human beings, oxen, and other mammals.
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