A bright, exuberant smile has always defined Lynn Jones’ physical appearance.Even through treatment for breast cancer, Jones has maintained a positive outlook on life.Jones is healthy. It has been four years since she began treatment. It’s a treatment that would entail four rounds of chemotherapy, a single mastectomy, three more rounds of chemotherapy and five weeks of radiation.Jones, who helps with marketing for the Camarillo Health Care District, is often out working with the public.