As shown in Table 2, concentrations of BDE-47 were below the reporting limit (10 ng/g lipid) in all the serum samples from the 1960s, whereas concentrations in 1990s adipose tissues averaged 28. High body burdens of 2,2',4,4'-tetrabromodiphenyl Ether (BDE-47) in California women.
Describe the role and circulation of cerebrospinal fluid in the nervous system. Cerebrospinal fluid (CSF) is a clear, colorless bodily fluid that occupies the subarachnoid space and the ventricular system around and inside the brain and spinal cord.
Any tear or hole in the membrane that surrounds the brain and spinal cord (dura) can allow the fluid that surrounds those organs to leak. This fluid is called the cerebrospinal fluid (CSF). When it leaks out, the pressure around the brain and spinal cord drops. Causes of leakage through the dura include:1  Certain head, brain, or spinal surgeries.2  Head injury. 3  Placement of tubes for epidural anesthesia or pain medications. 4  Spinal tap (lumbar puncture).his fluid is called the cerebrospinal fluid (CSF). When it leaks out, the pressure around the brain and spinal cord drops. Causes of leakage through the dura include: 1  Certain head, brain, or spinal surgeries. 2  Head injury. 3  Placement of tubes for epidural anesthesia or pain medications.