The three forms of skin cancer are defined by the types of cells from which they originate

Melanoma is the rarest out of these forms of skin cancer, but it is the most dangerous and can be fatal.

It's a malignant tumor that originates in melanocytes which are the cells that produce melanin (the pigment that gives colors to the skin, hair and eyes).

protist eukaryotes that are not plants, animals, or fungi ("misfits")

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.