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Perifovea is a region in the retina that circumscribes the parafovea and fovea and is a part of the macula lutea. [1] The perifovea is a belt that covers a 10° radius around the fovea and is 1.5 mm wide. [2] [3] The perifovea ends when the Henle's fiber layer disappears and the ganglion cells are one-layered. [4]
However, cats can also have double-layered coats out of two hair types in which the down hairs form the soft, insulating undercoat, and the guard hairs form the protective outer coat. [40] A typical cat coat exists of all three natural hair types, but due to the equal lengths of two of these hairs, the coat is still considered double-layered. [40]
The second kind of hair cats have is called awn hair. Awn hair is coarser and can be darker at the tips. It is most of what we think of as the visible hair on a cat.
Hair length is determined by the gene for fibroblast growth factor 5, with inactive copies of this gene causing long hair. [13] The Cat Genome Project, sponsored by the Laboratory of Genomic Diversity at the U.S. National Cancer Institute Frederick Cancer Research and Development Center in Frederick, Maryland, aims to help the development of ...
Atchoum (the French version of the sound made by a sneeze), is living with hypertrichosis, a condition that can occur in many mammals—including humans—which can cause unregulated growth of hair.
The furry feline gets his crazy hair from a condition called hypertrichosis, or "werewolf syndrome," which causes abnormal hair growth.. SEE ALSO: Service dog gets her own yearbook photo for ...
The fovea centralis is a small, central pit composed of closely packed cones in the eye.It is located in the center of the macula lutea of the retina. [1] [2]The fovea is responsible for sharp central vision (also called foveal vision), which is necessary in humans for activities for which visual detail is of primary importance, such as reading and driving.
2. Vitamin B12. One of eight B-complex vitamins, vitamin B12 is found naturally in some types of fish, red meat and fortified foods.It plays a key role in central nervous system function, DNA ...
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