Intermedeol Isolated from the Leaves of Ligularia fischeri var. spiciformis Induces the Differentiation of Human Acute Promyeocytic Leukemia HL-60 Cells - Jeong, Seoung-Hee; Koo, Seung-Ja; Choi, Jung-Hye; Park, Jae-Hoon; Ha, Joohun; Park, Hee-Juhn; Lee, Kyung-Tae (Planta Medica, 2002)