It's also present in spinal fluid and, in very small quantities, in the blood.

这种蛋白同时也出现于脊椎液中，并且极小量存在于血液里。

youdao

It's also present in spinal fluid and, in very small quantities, in the blood.

这种蛋白同时也出现于脊椎液中，并且极小量存在于血液里。

youdao