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B-Galactosidase-Deficient E. coli Slant Culture



For use in pBLU® transformation experiments. This is a mutant E. coli strain incapable of producing ß-galactosidase, which is necessary for the breakdown of lactose or X-gal, a lactose analog. When these bacteria are transformed with pBLU®, they will break down X-gal (and lactose) and this results in blue colonies. Slant culture.

Note: Culture should be used within 1 month but is best used within 2 weeks of delivery. Store at +4° C.


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  • This item contains living or perishable material and ships via 2nd Day or Overnight delivery.
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If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund or credit up to 30 days from date of receipt. Other restrictions may apply. Returns & Exchanges Policy.