This way, the tattoos do not "stain" the skin cells, and they are not perceived as a danger by the immune system defenses, according to a 2018 study in the Journal of Experimental Medicine.

2. SKIN COLOR IS DETERMINED BY CELLS IN THE EPIDERMIS. Those cells are known as melanocytes, which secrete a pigmented substance called melanin; the more melanin in the cells, the darker the skin.

American Cancer Society (ACS): Overview of Merkel Cell Skin Cancer. If you have lung cancer or a caregiver for someone who does, knowing what to expect can be helpful. Here you can find out all about ...

skin color is determined by cells in the epidermis. Those cells are known as melanocytes, which secrete a pigmented substance called melanin; the more melanin in the cells, the darker the skin.

Learn facts about cancer, in which abnormal cell growth destroys healthy body tissues ... prolonged exposure to the sun's ultraviolet rays without adequate sunblock can raise the risk for skin cancer.

Skin cancer is serious, and there are many misconceptions about what causes it, how to protect yourself, and more. Here, ...

Neurons talk to one another using electricity. If you could hear these impulses, they might sound like constant, rapid-fire ...

Read about signs and symptoms of Merkel cell carcinoma, a rare type of skin cancer, in our dedicated Merkel cell section. Self-Exams to Detect Skin Cancer. You may notice changes to your skin casually ...

With psoriasis, the underlying inflammatory response speeds up skin cell growth. As a result, the body produces new skin cells every few days. These cells then build up on the skin’s surface and ...

There are many misconceptions about skin cancer and skin tone. We VERIFY four facts about the disease and share tips on how you can reduce your skin cancer risk.

There are many misconceptions about skin cancer and skin tone. We VERIFY four facts about the disease and share tips on how you can reduce your skin cancer risk.