a1 National Institute for Medical Research, Mill Hill, London, N. W. 7
Under the conditions of our experiments, the local potentiation of immunity to influenza reported by FazekasdeSt Groth and Donnelley could not be demonstrated.
We should like to thank Dr C. H. Andrewes and Dr A. Isaacs for their advice and criticism, and Messrs E. Owen and D. Eade for their technical assistance.
(Received April 16 1954)
c1 W.H.O. Visiting Fellow at the World Influenza Centre.