Helminth-derived stefin-1 selectively reduces leukemic cell viability and promotes apoptosis in U937 cells - Phornthip Ploensil; Yaneenart Suwanwong; Phatchariya Phannasil; Mayuri Tarasuk; Unchalee Thonsri; Pakkawan Prapasitsin; Pongsakorn Martviset; Pathanin Chantree (PLoS ONE, 2026)