Tubuloside B, one of the phenylethanoids isolated from the stems of Cistanche salsa, inhibits TNFα-induced apoptosis. Tubuloside B possesses antioxidative effects[2].In Vitro: Pretreatment with tubuloside B (1, 10, or 100 mg/L) for 2 h attenuates the TNFα-mediated apoptosis.