National Collection of Type Cultures

National Collection of Type Cultures (NCTC) is one of the four culture collections that constitutes the Culture Collections operated by the UK Health Security Agency. It is a non-profit culture collection repository located in the UK. NCTC maintains over 5100 bacterial cultures, over 100 Mycoplasmas and more than 500 plasmids, host strains, bacteriophages, and transposons.

Source: Wikipedia — National Collection of Type Cultures (CC BY-SA 4.0)