Formaldehyde is one of the most commonly used chemicals in the world. Itâs found in wood products, clothing, deodorant, shampoo and much, much more. Itâs even found in outside air and in our blood.
Cerebrospinal fluid (CSF) is a clear, colorless body fluid found in the brain and spine. It is produced in the choroid plexuses of the ventricles of the brain. It acts as a cushion or buffer for the brain's cortex, providing basic mechanical and immunological protection to the brain inside the skull.
Cerebrospinal fluid (CSF) is secreted by the epithelial cells of the choroid plexuses. These cells like those of other secretory epithelia are polarised so that the properties of their apical membrane (ventricle facing) differ from those of the basolateral membrane (blood facing).