Sores appear 1-10 days after exposure to the bacteria. Microsoft Word â CD letter â impetigo 0308.doc Author: INGJ Created Date: EXPOSURE NOTICE Revised: May 19 checked below: ALWAYS CONSULT WITH A PHYSICIAN FOR TREATMENT. { } CHICKEN POX-onset about 2 to 3 weeks after exposure.
Microglia are the cells in the CNS that can do this in normal, healthy tissue, and they are therefore also referred to as CNS-resident macrophages. The ependymal cell is a glial cell that filters blood to make cerebrospinal fluid (CSF), the fluid that circulates through the CNS. Because of the privileged blood supply inherent in the BBB, the extracellular space in nervous tissue does not easily exchange components with the blood.
Another group of potential CNS stem cells in the adult rodent brain may consist of the ependymal cells themselves [ 47 ]. Ependymal cells, which are ciliated, line the lateral ventricles. They have been described as non-dividing cells [ 24 ] that function as part of the blood-brain barrier [ 22 ].ematopoietic Stem Cells. Of all the cell types in the body, those that survive for the shortest period of time are blood cells and certain kinds of epithelial cells. For example, red blood cells (erythrocytes), which lack a nucleus, live for approximately 120 days in the bloodstream.