The effects of low-dose X-ray pre-irradiation followed by 4-hydroxybenzoic acid and vanillic acid on P-glycoprotein-mediated efflux pirarubicin in multidrug-resistant K562/Dox cells. - Myint O; Supawat B; Kothan S; Tungjai M (Naunyn-Schmiedeberg's archives of pharmacology, 2026)