optic disc, the small blind spot on the surface of the retina, located about 3 mm to the nasal side of the macula. It is the point where the fibers of the retina leave the eye and become part of the optic nerve.
Adult stem cells are found in many organs and tissues, including the skin. In fact, human skin is the largest repository of adult stem cells in the body. Skin stem cells reside in the basal layer of the epidermis where they remain dormant until they are activated by tissue injury or disease. 1.
There are different types of cells found in the skin and most of them are found in the epidermis of the skin. The stem cells in the epidermis are located at the base of the epidermis and are glued by the hemidesmosomes to the basement membrane.There are three distinct types of cells found in the skin epidermis.angerhans cells are cells that present antigen and are located on the mucosa and skin. They are always found in all the epidermis layers but are very rampant in the stratum spinosum. Langerhans can also be found in the blood vessels and the mucosa of the foreskin, mouth, and vagina.