1. Pattison, I. H., and Millson, G. C., J. Comp. Pathol., 70, 182 (1960).
2. Pattison, I. H., and Millson, G. C., J. Comp. Pathol., 71, 350 (1961).
3. Pattison, I. H., Slow, Latent and Temperate Virus Infections, Symp., National Institutes of Health, Washington (edit. by Gajdusek, D. C., Gibbs, C. J., and Alpers, M.), 249 (1965).
4. Darcel, C. le Q., Merriman, M., Beauregard, M., Avery, R. J., and Kasting, R., Canad. J. Comp. Med., 27, 81 (1963).
5. Chandler, R. L., Lancet, i, 1378 (1961).