The ultrafine powder of atractylodis macrocephalae rhizoma improves immune function in naturally aging rats by regulating the PI3K/Akt/NF-κB signaling pathway - Yu, Wang; Jie, Su; Su, Gao; Zhuangwei, Niu; Yiqing, Zhou; Suhong, Chen; Guiyuan, Lv (Frontiers in Pharmacology, 2025)