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An analysis of thirteen studies of the teratological effects of pulsed magnetic fields on chick embryos from ten independent laboratories permits no clear conclusions. It is noted that comparatively little has been done to follow up on the reports by J. Juutilainen et al. (Rad. Environ. Biophys., vol.25, p.65-7, 1986) on the effects of extremely-low-frequency, sinusoidal magnetic fields on the malformation rate in chick embryos. An attempt to follow up on their results using similar but not identical exposures of 10- mu T, 50-Hz magnetic fields, which produced negative results, is reported.