31. The cerebrospinal fluid that surrounds the spinal cord is contained by the arachnoid mater. 32. Zidovudine is also well absorbed in the body and penetrates into the cerebrospinal fluid . 33. These may block the circulation of cerebrospinal fluid around the brain, leading to hydrocephalus. 34. This trauma can lead to a leak of cerebrospinal fluid into the nasal cavity. 35. The ventricular system is a set of structures in the brain containing cerebrospinal fluid . 36. The human brain exhibits neutral buoyancy as a result of its suspension in cerebrospinal fluid . 37. Sandwiched between is the arachnoid, a loose-fitting membrane that holds the cerebrospinal fluid , or CSF. 38. The subarachnoid space contains cerebrospinal fluid ( CSF ). 39. Cerebrospinal fluid ( CSF ) analysis may demonstrate elevated protein level with or without pleocytosis.40. The articles central nervous system and dural sinuses or Cerebrospinal fluid might be better targets.