Peptides, Vol. 1, p. 391. Printed in the U.S.A.

A N N O U N C E M E N T

The 5th International Symposium on Radioimmunology will be held in Lyon, France, from 9 to 11 April 1981. Organizing Committee: C. A. Bizoullon, H. Bornet, J. Cade, G. Charriere, R. Cohen, J. Corniau, G. Geelen, C. Gharib, J. Orgiazzi, J. Sassard and M. Vincent.

For information write to Symposium Secretariat: V6me Colloque International de Radioimmunologie de Lyon, Service de Radiopharmacie et Radioanalyse, Centre de M6decine Nucl6aire, 59 Boulevard Pinel, 69394 Lyon C6dex 3, France.

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