If a class is serializable, all of its subclasses are also serializable.

• I've got someone on the line.
• Who's the caller?

Excessive melanin production occurs in melasma, lentigo, nevocellular nevi and malignant melanoma, whereas the loss of melanocyte function leads to vitiligo.

1880: J. W. Keene, Cacoëpy in Medicine, main title