Khyzhnyak, M.; Vasilyeva, I.; Potapov, O.; Tsyndrenko, O.; Gafiychuk, Y. PLATELET-RICH PLASMA AND PLATELET FIBRIN: STANDARDIZED PREPARATION PROTOCOLS, MECHANISMS OF ACTIVATION, STORAGE STABILITY, AND REGULATORY FRAMEWORKS. East. Ukr. Med. J. 2025, 13, 952-962.