Protocol for Studying Honokiol Regulation of Transforming Growth Factor Beta 1/Smad Signaling in Ultraviolet A–induced Skin Photoaging Models0 views•2026•MedicineGuanyi Ma1, Zonghui Liu1, Yanan Li1, Yu Tao1Guanyi Ma1Zonghui Liu1Yanan Li1Yu Tao11Plastic Surgery Center, the 988th Hospital of Joint Logistic Support Force of Chinese People's Liberation ArmyPlastic Surgery Center, the 988th Hospital of Joint Logistic Support Force of Chinese People's Liberation Army