Loss of cytokine-STAT5 signaling in the CNS and pituitary gland alters energy balance and leads to obesity. oleh Ji-Yeon Lee, Heike Muenzberg, Oksana Gavrilova, Jacquelyn A Reed, Darlene Berryman, Eneida C Villanueva, Gwendolyn W Louis, Gina M Leinninger, Stefano Bertuzzi, Randy J Seeley, Gertraud W Robinson, Martin G Myers, Lothar Hennighausen