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.
Smoking can cause cancer and then block your body from fighting it: Poisons in cigarette smoke can weaken the bodyâs immune system, making it harder to kill cancer cells. When this happens, cancer cells keep growing without being stopped. Poisons in tobacco smoke can damage or change a cell's DNA. DNA is the cell's instruction manual that controls a cell's normal growth and function. When DNA is damaged, a cell can begin growing out of control and create a cancer tumor. Doctors have known for years that smoking causes most lung cancers.