Add to Cart Compare Quick view BugDisc™ Nitrocefin Disc Biovision MSRP: Now: £164.26 Was: Beta-Lactamases (βLs), are hydrolases expressed in Gram-positive and Gram-negative bacteria. When those bacteria encounter β-lactam antibiotics which contain the four atom ring-structure, they... MSRP: Now: £164.26 Was: Add to Cart Compare Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: £164.26 Was: Subtotal: Add to Cart