298 



310 



CONTENTS 



PAGE 



ACTION DE LA CYSTEAMINE SUR LES TUMEURS GREF- 



FEES, IRRADIEES LX LOCO 



S. Neukomm, Mine. L. Peguiron et A. Herve 



ETUDE HISTOLOGIQUE DE LA REPARATION INTESTI- 

 NALE CHEZ DES RATS IRRADIES SOUS DIVERSES 



CONDITIONS DE PROTECTION 304 



H. Maisin et C. Fievez 

 Discussion on papers by Gerebtzoff and Bacq, Betz, Neukomm, 

 Peguiron and Herve, and Maisin and Fievez 



CYTOLOGICAL EFFECT OF CHRONIC GAMMA IRRADIA- 

 TION AND THE PROTECTR'E PROPERTY OF CERTAIN 

 CHEMICALS AGAINST THE RADIATION INDUCED 



CHROMOSOME ABERRATIONS 316 



Knut Mikaelsen 

 THE EFFECT OF RADIATION ON FROZEN TUMOUR CELLS 32 1 



Ilse Lasnitzki 

 MECHANISMS OF MUTATION PRODUCTION IN MICRO- 

 ORGANISMS 326 



Howard B. Newcombe 

 Discussion .....••••• ■^•^-* 



INFLUENCE DES DOSES ELEVEES DE METHYL-BIS-(2- 

 CHLOROETHYL)AMINE SUR L'OVAIRE DE LAPINE 

 ADULTE, AVEC OU SANS PREPARATION PAR LA BETA- 



MERCAPTOETHYLAMINE 340 



Paul Desaive 



HISTOLOGICAL CHANGES IN MAN AND RABBITS AFTER 

 PARENTERAL THORIUM ADMINISTRATION . . .358 



Charles Johaxsen 

 Discussion .....-•••• 3dU 



XI 



