To specifically delete the LIFR in the LE , we derived a line of mice in which Cre recombinase was inserted into the endogenous lactoferrin gene ( Ltf-Cre ) .
O O O O B-GeneOrGeneProduct O O O O O O O O O B-OrganismTaxon O O O O O O O O O B-GeneOrGeneProduct O O B-GeneOrGeneProduct O O