The Cystic Fibrosis (CF) Mouse Models Core at Case Western Reserve University (CWRU) produces, characterizes and exports various Cystic Fibrosis Mouse Models for CF research. In addition to providing mice to local researchers we export CF mouse models nationally and internationally. The Core has provided mice to over 124 investigators at 58 institutions in 10 different countries over the past 5 years. The CF Mouse Models Core at CWRU is currently the largest repository of CF mouse models in the world.