Calb1 (Mmus) CB CalbindinD28K calbindin D28 Calb-1 spot 35 protein D-28K calbindin calbindin-28K vitamin D-dependent calcium-binding protein, avian-type calbindin 1, 28kDa Calb Brain-2 PCD-29 calbindin-D (28k) gene