您要查找的是不是：
- fraction Ⅰ protein蛋白質部分Ⅰ, 蛋白質片段Ⅰ
- pre-sperm fraction (豬)無精子部的精液
- fraction Ⅰ, Ⅱ, Ⅲ of γ-globulin丙種球蛋白的Ⅰ、Ⅱ、Ⅲ組分
- (=quick fraction) (膜電位)快速段，快速部分Q fract.
- 因此近年來有關學者對從卡介苗中提取低毒高效成分產生了極大興趣，如卡介苗的細胞壁骨架（Cell-Wall Skeleton from BCG, BCG-CWS）、多糖（Polysaccharide Nucleic Acid Fraction from BCG, BCG-PSN）等。Therefore, many researchers are interested in separating active components with low toxicity from BCG, such as Cell-Wall Skeleton from BCG(BCG-CWS), Polysaccharide Nucleic Acid Fraction from BCG(BCG-PSN), etc.
