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Is your Western Blot showing a band at the wrong molecular weight? This is one of the most common frustrations in the lab, but it's not a dead end. An unexpected band size is often a critical clue, not a failed experiment. The theoretical calculated weight from amino acid sequence rarely matches the observed weight on a gel. This discrepancy can be caused by a host of biological reasons from post-translational modifications like glycosylation to protein cleavage, splice varia

Struggling with faint or invisible bands in your Western blots? This in-depth guide provides a detailed, step-by-step protocol for detecting low-abundance proteins. We cover critical optimizations from strategic sample preparation and lysate concentration to advanced detection using high-sensitivity ECL substrates. Learn how to choose the right buffers, membranes, and antibodies, and master techniques for enhancing your signal-to-noise ratio.