text:  Barr2KO_bone_PTH_Barr_Replicate3 Calvarial bone, beta-arrestin null, bPTH(7-34) strain/background: C57BL/6J; genotype/variation: beta-arrestin null; gender: male; age: 15 weeks; tissue: calvarial bone; intervention treatment: beta-arrestin-signaling variant of parathyroid hormone, bPTH(7-34); replicate: 3