Cell growth, polyferation and differentiation are controlled largely by selective transcriptional modulation of Gene expression in response to extracellular stimula.
withdraw symptoms; to avoid this start with small steps don't quit all t once, this can be even more harmful to your body
heart attacks and other health issues; you can also try to avoid them by quitting little by little, because quitting too fast (depending on how long the person has smoked) could cause your body to go into shock because it isn't receiving nicotine regularly.
