13179_2985_cancerous_tumors2
Keywords
Color
Drawing of skin cells. Cells move and divide. CU of cell membrane. Narrator discusses cell growth and the epidermal cells and keratin. Cells are growing and dividing.
Drawing of skin cells. Cells move and divide. CU of cell membrane. Narrator discusses cell growth and the epidermal cells and keratin. Cells are growing and dividing.
1980s
1970s
1970s
1980s