Bovine serum albumin:
Bovine serum albumin (also known as BSA or "Fraction V") is a serum albumin protein derived from cows.
en.wikipedia.org
牛血清白蛋白:
牛血清白蛋白（BSA），又称第五组分，是牛血清中的一种球蛋白，包含583个氨基酸残基，分子量为66.430 kDa，等电点为4.7。
zh.wikipedia.org
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Bovine serum albumin牛血清白蛋白