Nivalenol is a type - B trichothecene mycotoxin, produced by molds such as Fusarium cerealis, Fusarium graminearum. Nivalenol may be formed by higher plants and by mamals, as a productt of biodegradation of other thrichothecenes.Nivalenol (0.01 mg/ml) induces apoptosis in HL60 cells (Ueno et al., 1995). Nivalenol was shown to inhibit protein synthesis in rabbit reticulocytes in vitro. Nivalenol inhibited the synthesis of nucleic acids in vitro (Ueno and Fukushima, 1968) Nivalenol is a type - B trichothecene mycotoxin, produced by molds such as Fusarium cerealis, Fusarium graminearum. Nivalenol may be formed by higher plants and by mamals, as a productt of biodegradation of other thrichothecenes. Nivalenol (0.01 mg/ml) induces apoptosis in HL60 cells (Ueno et al., 1995). Nivalenol was shown to inhibit protein synthesis in rabbit reticulocytes in vitro. Nivalenol inhibited the synthesis of nucleic acids in vitro (Ueno and Fukushima, 1968)