Atma, Y.; Lioe, H. N.; Prangdimurti, E.; Seftiono, H.; Taufik, M.; Mustopa, A. Z. Dipeptidyl Peptidase IV (DPP-IV) Inhibitory Activity of Ultrafiltration and Gel Filtration Fraction of Gelatin Hydrolyaste Derived from Bone of Fish for Antidiabetes. Int. J. Adv. Sci. Eng. Inf. Technol. 2019, 9, 2096-2103.