Psoriasis and warts are examples of situations where basal cells keep kividing longer than they sould. These situations aren't cancer. Skin cancer develops through several stages of change. Above the basement membrane 2. Basal cells on the lowest layer divide to renew the epidermal tissue 3.
Keratin is a protein.
B. Dermis 1. Below the basement membrane 2. Blood vessels 3. Sweat glands 6. Fat cells-below all the above stuff C. Melanocytes are located on the lowest layer of the epidermis, among the dividing basal cells.