This will be the last time weever quote the Surgeon General.

这可能是最后一次引用医生的话了。

Extraction yield of collagen from skin of bighead, weever and crucian was 11.9%, 11.3% and 11.6%, respectively, with acid.

采用酸法和热水法提取鱼皮中的胶原蛋白，实验结果表明，鳙鱼、鲈鱼、鲫鱼等鱼皮酸法提取率分别为11.9％，11.3％及11.6％；

Extraction yield of collagen from muscle of bighead, weever and crucian was 0.61%, 0.57% and 0.43%, respectively, by extraction of acid-soluble collagen with acid.

采用酸法提取鱼肌肉中的酸溶性胶原蛋白，实验结果表明，鳙鱼、鲈鱼、鲫鱼等鱼的提取率分别为0.61%，0.57%及0.43%。