This mouse strain is a novel Natural Killer cell specific inducible cre that is useful for studying the development, maturation, and function of NK cells. It has a tamoxifen inducible Ncr1-ERT2iCre mouse allele that is used for floxing gene(s) of interest out of NK cells. This model was designed, created, and developed in Todd Fehniger’s lab at Washington University School of Medicine.