Overo refers to several genetically unrelated pinto coloration patterns of white-over-dark body markings in horses, and is a term used by the American Paint Horse Association to classify a set of pinto patterns that are not Tobiano.
Cerebrospinal fluid signals control the behavior of stem cells in the brain. FULL STORY. When stem cells from the old brain are cultured with signals of a young choroid plexus they can divide and form new neurons (red).
This is not found in plants. The cell membrane controls exchange of materials such as nutrients and waste between cells and their environment. They have other important functions, for example to enable cells to receive hormones.Cell membrane is not a function of the brain. This is not found in plants.