A dot blot is a technique used in molecular biology to detect the presence of a specific biomolecule (e.g., DNA, RNA, or protein) in a sample. The sample is applied directly onto a membrane as a 'dot,' and the target molecule is then detected using a probe that binds specifically to it. It's a simple and rapid method, commonly used for qualitative or semi-quantitative analysis, such as confirming the presence of a target molecule or comparing relative abundance between samples.
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