ROBERT LONGUEHAYE, NIBSC / SCIENCE PHOTO LIBRARY ROBERT LONGUEHAYE, NIBSC / SCIENCE PHOTO LIBRARY
Purification of proteins and peptides. Chemist uses low pressure preparative chromatography equipment in a laboratory to purify proteins and peptides. This is a form of liquid chromatography, a technique used to separate out mixtures of biological molecules. The sample to be purified is mixed in a liquid and passed at low pressure through a column. The column separates the sample into component parts as different size molecules pass through at different rates. The purified fractions are collected separately.
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