frameshift mutation / frame-shift mutation; frameshift. A frameshift mutation is a genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read. A DNA sequence is a chain of many smaller molecules called nucleotides.
As for Flexeril (cyclobenzaprine) is is not a controlled substance under US, Canadian, or international law. Some drugs used as muscle relaxants ARE controlled substances like Valium and many US states and countries have listed Soma (carisoprodol) as a controlled substance (or prohibited it).
An Overview of Focalin as a Controlled Substance. FocalinÂ® (dexmethylphenidate hydrochloride) is a prescription medication that is classified as a controlled substance. Controlled substances are medications or drugs that are very habit-forming or are very likely to be abused. Certain prescription medications and most illegal street drugs are controlled substances.