Hydrogel Delivery Systems for Biological Active Substances: Properties and the Role of HPMC as a Carrier. - Amanzholkyzy, Arailym; Zhumagaliyeva, Shynar; Sultanova, Nurgul; Abilov, Zharylkasyn; Ongalbek, Damira; Donbayeva, Elvira; Niyazbekova, Aktoty; Mukazhanova, Zhazira (Molecules, 2025)