Triggers of nonallergic rhinitis symptoms vary and can include certain odors or irritants in the air, changes in the weather, some medications, certain foods, and chronic health conditions. A diagnosis of nonallergic rhinitis is made after an allergic cause is ruled out.
DNA extraction. For the various methods, see Nucleic acid methods. DNA isolation is a process of purification of DNA from sample using a combination of physical and chemical methods. The first isolation of DNA was done in 1869 by Friedrich Miescher. Currently it is a routine procedure in molecular biology or forensic analyses.
Daughter strand-Refers to the newly synthesized strand of DNA that is copied via the addition of complementary nucleotides from one strand of pre-existing DNA during DNA replication. DNA Helicase-The enzyme responsible for separating the two strands of DNA in a helix so that they can be copied during DNA replication.rimase-The enzyme responsible for initiating synthesis of RNA primers on the lagging strand during DNA replication. Holoenzyme-A term used to describe a collection of different enzymes that work together in a given process such as DNA replication.