(uncountable) Molecular nitrogen (N2), a colorless, odorless gas at room temperature. (countable) A specific nitrogen within a chemical formula, or a specific isotope of nitrogen The two nitrogens are located next to one another on the ring.
An allergist specializes in allergies, asthma, and allergic asthma. Internist. An internist is a doctor who specializes in internal medicine -- the study of diseases in adults, particularly those related to internal organs -- and who has completed three years of training after medical school. Pediatrician.
What Kind of Doctor Is Best to Treat Lung Cancer? (1:12) Lung cancer patients should consult more than one kind of doctor, including an oncologist, radiologist and surgeon. In this video, Raja Flores, MD, thoracic surgeon, discusses why you shouldn't rush into lung cancer surgery.