Letters to the Editor

Parry H.B. . Elimination of natural scrapie in sheep by sire genotype selection. Nature 1979; 277: 127–9

Parry H.B. . Scrapie disease in sheep. London: Academic Press, 1983

Masters C.L. , Gajdusek D.C. , Gibbs C.J. . The familial occurrence of Creutzfeldt-Jakob disease and Alzheimer's disease. Brain 1981; 104: 535–58

Alpers M.P. . Foreword. In: Parry H.B. . Scrapie disease in sheep. London: Academic Press, 1983

Pattison I.H. . Oncogenes–implications for human cancer. J R Soc Med 1984; 77: 805

Oppenheimer S.J. . Oncogenes in scrapie and Creutzfeldt- Jakob disease. J R Soc Med 1985; 78: 347

Ridley R.M. , Baker H.F. , Crow T.J. . Virogenes in scrapie and Creutzfeldt-Jakob disease. J R Soc Med 1985; 78: 970