Crossing Ltf-Cre mice with Lifr flx/flx mice generated Lifr flx/D : Ltf Cre/+ females that were overtly normal but infertile .
O B-GeneOrGeneProduct B-OrganismTaxon O B-GeneOrGeneProduct O B-OrganismTaxon O B-GeneOrGeneProduct O O B-GeneOrGeneProduct O O O O O O O O O