DNA (deoxyribonucleic acid) is the genomic material in cells that contains the genetic information used in the development and functioning of all known living organisms. DNA, along with RNA and proteins, is one of the three major macromolecules that are essential for life.
Further information: Osteopathic medicine in the United States. Doctor of Osteopathic Medicine (D.O.) is a professional doctoral degree for physicians and surgeons offered by medical schools in the United States. A D.O. degree graduate may become licensed as an osteopathic physician, having equivalent rights, privileges, and responsibilities as a physician who has earned the Doctor of Medicine (M.D.) degree.
Answers from Brent A. Bauer, M.D. A doctor of osteopathic medicine (D.O.) is a fully trained and licensed doctor who has attended and graduated from a U.S. osteopathic medical school. A doctor of medicine (M.D.) has attended and graduated from a conventional (allopathic) medical school. The major difference between osteopathic and allopathic doctors is that some osteopathic doctors provide manual medicine therapies, such as spinal manipulation or massage therapy, as part of their treatment. After medical school, both M.D.s and D.O.s must complete residency training in their chosen specialties.