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Dische's diphenylamine reagent consists of diphenylamine, glacial acetic acid, sulfuric acid, and ethanol. [1] When heated with DNA, it turns blue in the presence of DNA. A more intense blue color indicates a greater concentration of DNA.
Diphenylamine is an organic compound with the formula (C 6 H 5) 2 NH. The compound is a derivative of aniline , consisting of an amine bound to two phenyl groups. The compound is a colorless solid, but commercial samples are often yellow due to oxidized impurities. [ 5 ]
It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2] For this reason it is essential to use multiple different tests to show all adulterants.
The biomarker test is a spinal tap test (also called a lumbar puncture) that uses a needle to remove cerebrospinal fluid (i.e. the fluid inside your spine) to look for these specific clumping ...
skynesher/Getty Images. You probably don’t think too much about eating. You pop something in your mouth, chew it up and swallow it. But, sometimes, what you eat may seem like it won’t go ...
The daughter of Bob Lee, the tech executive whose fatal stabbing nearly two years ago sent shock waves through Silicon Valley and stoked debate about violent crime in San Francisco, said she felt ...
Zacharias Dische (18 February 1895 – 17 January 1988) was an American biochemist. He worked as a biochemical researcher in Vienna before being forced by the Anschluss to become a refugee, [ 1 ] first in France and then in the US, where he joined the faculty of Columbia University in 1943. [ 2 ]
Here's are some tips from the Federal Trade Commission if you think you've been affected by a data breach, including the one involving Change Healthcare:. Get free credit reports from ...