melanocyte-stimulating hormone (noun)

1. As the scientist injected the melanocyte-stimulating hormone into his skin, he witnessed a horrifying transformation into a grotesque creature.

2. In the distant future, humans could use advanced technology to modify their melanocyte-stimulating hormone, allowing them to change their skin color at will.

3. Why did the melanocyte-stimulating hormone go to therapy? Because it couldn't stop controlling the pigmentation of melanocytes!

4. In the novel, the protagonist discovered a secret organization that was using the melanocyte-stimulating hormone to manipulate the appearance of individuals for their own nefarious purposes.