What Are the Symptoms of Bird Flu in Humans? Bird flu symptoms in people can vary. Symptoms may start out as normal flu-like symptoms. This can worsen to become a severe respiratory disease that can be fatal. In February 2005, researchers in Vietnam reported human cases of bird flu in which the virus infected the brain and digestive tract of two children. Both died. These cases make it clear that bird flu in humans may not always look like typical cases of flu.
Pericyte, Astrocyte and Basal Lamina Association with the Blood Brain Barrier (BBB). The periendothelial accessory structures of the BBB include pericytes, astrocytes, and a basal membrane. The endothelial cells of the BBB are distributed along the length of the vessel and completely encircles the lumen. A thin basement membrane (i.e. basal lamina) supports the ablumenal surface of the endothelium.
Heterogeneity of astroglia. Astrocytes (literally âstar-like cellsâ) are the most numerous and diverse neuroglial cells in the CNS. While most neuroscientists think they know what an astrocyte is, there is no uniform and unequivocal definition of an astrocyte. Not all astrocytes are star-like cells, not all of them express the specific marker glial fibrillary acidic protein (GFAP), not all contact brain capillaries. Astrocytes are actually the cell population in the brain which are left over after one would remove neurons, oligodendrocytes and microglial cells. Thus astrocytes display a remarkable heterogeneity in their morphology and function.