👉 A tummock is a type of human skin cell that can be found in the basal layer of the epidermis (the outermost layer of the skin) and is characterized by its unique appearance, which is often brown or black. It is known for its ability to change color over time due to changes in the body's hormone levels, and it can also be used as a diagnostic tool to identify various diseases. Tummocks are typically found on the surface of the skin, but they
