Researchers can comb the cerebrospinal fluid for this metabolite for an indirect measurement of serotonin.

研究人员可以通过检测这种代谢物在脑脊液中的浓度，从而间接地测量出 5-羟色胺水平。

These first two, the pia and arachnoid maters, form the subarachnoid space, which houses the cerebrospinal fluid, or CSF.

前两者，即软脑膜和蛛网膜之间，叫作蛛网膜下隙；蛛网膜下隙里含有脑脊液，简称CSF。

We're gonna put a shunt into one of the ventricles to give the cerebrospinal fluid an out.

我们会将分流通管放入其中一个脑室使脑脊液流出。