We forgot to put double spaced in the paper assignment handout. Test this Friday April 17. In normal skin, a. Basal cells divide to renew skin surface. 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.