*^ /^w 



CONTENTS 



PAGE 



Chairman's opening remarks 



by P. B. Med A WAR . 



Studies on transplantation antigens 



by L. Brent, P. B. Medawar and M. Ruszkiewicz ... 6 

 Discussion: Amos, Barrett, Billingham, Brent, Eichwald, Hildemann, 

 Kandutsch, G. Klein, Medawar, Silvers, Woodruff ... 20 



Transplantation antigens, production of haemagglutinins and 

 inhibition of the haemagglutination reaction 



by G. Lejeune-Ledant 25 



Discussion: Albert, Amos, Barrett, Billingham, Brent, Davies, 

 Hasek, Hildemann, Medawar, Michie, Mitchison, Nakic, 

 Russell, Silvers, Simonsen, Woodruff 36 



H-2 histocompatibility antigens of the mouse 



by D. A. L. Davies 45 



Discussion: Amos, Brent, Davies, Hasek, Kandutsch, E. Klein, 

 G. Klein, Medawar, Simonsen, Woodruff . .... 66 



An isoantigenic lipoprotein from sarcoma I 



/jy A. A. Kandutsch andj. H. Stimpfling .... 72 



Discussion: Amos, Davies, Eichwald, Feldman, Kandutsch, Medawar 86 



Studies on cheek pouch skin homografts in the Syrian hamster 



by R.E. Billingham and W. K. Silvers ..... 90 

 Discussion: Barrett, Batchelor, Billingham, Brent, Eichwald, 

 Feldman, Hildemann, Krohn, Lawrence, Medawar, Michie, 

 Russell, Silvers, Simonsen, Voisin, Woodruff .... 108 



Mother-foetus immunological relationship as an exceptional 

 homograft model 



fey M. Hasek, V. Haskova, A. Lengerova and M. VojTi'sKOVA . 118 

 Discussion: Barrett, Billingham, Brent, Hasek, G. Klein, Krohn, 

 Lawrence, Medawar, Russell, Silvers, Woodruff . . .129 



Transplantation tolerance and immunity in relation to age 



fey J. G. Howard, D, Michie and M, F. A. Woodruff . . 138 



Discussion: Brent, Hildemann, Loutit, Medawar, Michie, Mitchison, 

 Woodruff .......... 153 



Immunogenetics of tumours grown in radiation chimeras 



fey M. Feldman and D. Yaffe ..... . . 163 



Discussion: Amos, Feldman, E. Klein, G. Klein, Lawrence, Loutit, 

 Medawar, Nakic^, Woodruff 179 



