CONTENTS 



Page 



24. Immunological Studies on Lethally and Sub-Lethally Irradiated 



Animals. G.J. V. Nossal and Lois Larkin ... ... ... 236 



Discussion ... ... ... ... ... ... ... ... 243 



25. Short-Term Studies of the Effect of Radioiodine Therapy for 



Thyrotoxicosis on the Thyroidal Iodide Clearance Rate. 



I. D. Thomas, T. H. Oddie and F. F. Rundle ... ... 244 



Discussion ... ... ... ... ... ... ... ... 245 



26. Effect of X Irradiation on the Mouse Foetus. A. S. Eraser and 



R.J.Hall 248 



Discussion ... ... ... ... ... ... ... ... 251 



27. The Spectrum of Sensitivity of Drosophila Germ Cell Stages to X 



Irradiation. Irwin I. Oster 



Discussion 



The Genetic Basis of X-Ray Induced Somatic Damage. Irwin I 

 Oster 



28. Imperfections Induced in Solids by Fast-Particle Irradiation 



P. G. Klemens 



Discussion 



253 

 266 



268 



272 

 281 



29. Radiobiological Mechanisms at the Cellular Level: 



Lines of investigation which have been opened up by recent 



technical developments. L. H. Gray ... ... ... ... 282 



Discussion ... ... ... ... ... ... ... ... 298 



XI 



