Agents of chemical warfare continue to pose a threat to human life. Organophosphorus
compounds are possibly the best known and most used agents in recent times. These are
known to produce acute ill health and death and, probably equally important, many diverse
delayed effects, many of which are not clinically nor pathologically well defined. The
immediate and delayed effects of organophosphorus compounds, in particular, and those of
other known agents of chemical warfare, such as mustard gas, Lewisite, phosgene …