Tizanidine is a short-acting muscle relaxer that's marketed under the brand name Zanaflex. It is used to treat muscle spasms caused by certain conditions such as multiple sclerosis, ALS, or spinal cord injury.It is also prescribed off-label for certain headache disorders, symptoms of fibromyalgia, and as a sleep aid.Tizanidine works by blocking nerve impulses that are sent to your brain.izanidine (Zanaflex) Interactions. Do not take tizanidine if you are also taking the antidepressant fluvoxamine (Luvox) or the antibiotic ciprofloxacin (Cipro). Let your doctor know all other medicines you are taking before he prescribes tizanidine.
Structure of the Double Helix. Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
Even though the shape of DNA is often described as a ladder, it is not a straight ladder. It is twisted to the right, making the shape of the DNA molecule a right-handed double helix. This shape allows for a large amount of genetic information to be 'stuffed' into a very small space. In fact, if you lined up each molecule of DNA in one cell end to end, the strand would be six feet in length.