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.
1 The flow of cerebral spinal fluid is blocked. 2  Abnormal circulation of cerebral spinal fluid causes inadequate absorption by the membranes covering the brain. 3  The brain size is small (cerebral atrophy or there is a localized injury), and the fluid volume appears large as it fills in space.