Introduction / H.P. van Egmond -- Aflatoxin M?b-?s1 : occurrence, toxicity, regulation / H.P. van Egmond -- Chromatographic methods of analysis for aflatoxin M?b-?s1 / R.D. Stubblefield and H.P. van Egmond -- Immunochemical methods of analysis for aflatoxin M?b-?s1 / J.M. Fremy and F.W. Chu -- Aflatoxin M?b-?s1 : stability and degradation / A.E. Yousef and E.H.Martin -- Toxic metabolites from fungal cheese starter cultures ... / G. Engel and M. Teuber -- Mycotoxigenic fungal contaminants of cheese and other dairy products / P.M. Scott