Isotope and radiation in parasitology IV

New developments in the application of nuclear techniques in animal parasitology and in the interactions between parasites, host genotype and the environment are reported. Nuclear techniques, used in conjunction with other standard techniques, represent important research tools for obtaining information particularly on host-parasite relationships. Nineteen papers were presented, most of which reviewed a relatively broad field. In 16 papers radioisotopes were reported as being or beginning to be employed. These have been analyzed individually for INIS. Three papers (''Influence of environmental factors on the epidemiology of helminth infections in ruminants'' by R.J. Thomas, UK; ''Factors affecting resistance to ecto- and endoparasites of cattle in tropical areas and implications for selection'' by J.E. Frisch, Australia; and ''Evaluation and potential of trypanotolerant livestock in Africa'' by J.C.M. Trail, Kenya) were fully documented reviews in which, however, no mention was made of nuclear techniques