to cause to hold or exhibit a particular bias; to influence, especially unfairly: a tearful plea designed to bias the jury; a survey biased toward highly educated people. 11.
Moles are caused when cells in the skin, called melanocytes, grow in clusters or clumps. Melanocytes are distributed throughout your skin and produce melanin, the natural pigment that gives your skin its color.
The vast majority of moles are not dangerous. Moles that are more likely to be cancer are those that look different than other existing moles or those that first appear after age 30. If you notice changes in a mole's color, height, size, or shape, you should have a dermatologist (skin doctor) evaluate it.