Protien is usually found in meats and dairy foods
Mesquite trees saguaro cactus and octiallia
The ependymal cells is the answer. One of the four types of
neuroglia in the center of nervous system is ependymal, this is the reason of
production of cerebrospinal fluid, this cause to serve as a reservoir for
neuroregeneration, also this is made of thin neuroectodermal linange to
ventricular system of the brain and the central canal of the spinal cord, made
up of ependymal cells