Experimental evidence suggests that the nucleoid is largely composed of DNA, about 60%, with a small amount of RNA and protein. The latter two constituents are likely to be mainly messenger RNA and the transcription factor proteins found regulating the bacterial genome.
An ophthalmologist is a medical doctor (MD) or an osteopathic doctor (DO) who specializes in eye and vision care. Ophthalmologists are trained to perform eye exams, diagnose and treat disease, prescribe medications and perform eye surgery. They also write prescriptions for eyeglasses and contact lenses.
In the United States, doctors are either an MD (allopathic doctor) or DO (osteopathic doctor). For patients, thereâs virtually no difference between treatment by a DO vs MD. In other words, you should be equally comfortable if your doctor is an M.D. or a D.O.