STUDIES WITH RHINOVIRUSES IN VOLUNTEERS: PRODUCTION OF ILLNESS, EFFECT OF NATURALLLY ACQUIRED ANTIBODY, AND DEMONSTRATION OF A PROTECTIVE EFFECT NOT ASSOCIATED WITH SERUM ANTIBODY.

STUDIES WITH RHINOVIRUSES IN VOLUNTEERS: PRODUCTION OF ILLNESS, EFFECT OF NATURALLLY ACQUIRED ANTIBODY, AND DEMONSTRATION OF A PROTECTIVE EFFECT NOT ASSOCIATED WITH SERUM ANTIBODY.