Northern blot

a method of detecting a particular RNA fragment in a mixture, such as one derived from a tissue extract. It involves separating the various RNA molecules using gel electrophoresis, blotting the separated RNAs onto nitrocellulose, and then using a nucleotide probe to hybridize with, and highlight, the RNA fragment of interest. [named by analogy with Southern blot]

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Psychology term of the day

January 11th 2025

test marketing

research undertaken to assess consumer reactions to new or altered products. Companies often try to carry out this research discreetly so that competitors are unaware of any potential changes. On the basis of the results, products may be introduced into the general market, introduced after changes, or withdrawn.