From DNA Replication at ThinkQuest. In general, DNA is replicated by uncoiling of the helix, strand separation by breaking of the hydrogen bonds between the complementary strands, and synthesis of two new strands by complementary base pairing. Replication begins at a specific site in the DNA called the origin of replication.
For Meniereâs disease, destructive procedures are associated with better control of vertigo than shunt surgery, showing good control in over 90% of patients followed for five or more years. The vestibular nerve may be sectioned via the middle fossa, retrolabyrinthine, and retrosigmoid approaches, with similar efficacy.
Treatment of central positional vertigo, other than attempting to correct the cause, is not well worked out. Generally one attempts treatment with vestibular suppressants and centrally acting drugs. Vestibular rehab does not help central positional vertigo. Benign recurrent vertigo. This is an episodic positional vertigo syndrome, first described by Slater (1979), and also by Cha et al (2008). It is thought to be a migraine variant.