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Beschreibung

The &beta,-galactosidase substrate X-Gal (5-bromo-4-chloro-3-indolyl-&beta,-D-galactopyranoside) is a chromogenic stain for &beta,-gal activity, and is commonly used to distinguish between recombinants and nonrecombinants by lacZ &alpha,-complementation with appropriate vectors and hosts. X-Gal Solution is provided as a convenient 40 mg/ml concentrate in DMSO, ready for dilution into culture medium or appropriate buffers.