Human RSPO1/R-spondin1 Is Expressed during Early Ovary Development and Augments β-Catenin Signaling Tomaselli, Sara ; Megiorni, Francesca ; Lin, Lin ; Mazzilli, Maria Cristina ; Gerrelli, Dianne ; Majore, Silvia ; Grammatico, Paola ; Achermann, John C. Abstract Publication: PLoS ONE Pub Date: January 2011 DOI: 10.1371/journal.pone.0016366 Bibcode: 2011PLoSO...616366T