Vitamin D-binding protein contributes to the maintenance of α cell function 2 and glucagon secretion by Viloria, K, Nasteska, D, Briant, L, Heising, S, Larner, D, Fine, N, Ashford, F, Xavier, G, Ramos Jimenez, M, Hasib, A, Cuozzo, F, Manning Fox, J, Macdonald, P, Akerman, I, Lavery, G, Flaxman, C, Morgan, N, Richardson, S, Hewinson, M, Hodson, D