Factors in human milk interfering with influenza-virus activities.

Photochemical Reactions of Nitrogen Dioxide and Hydrocarbons in Air: A. Miller, C. Brown, K. D. Franson ............................. 934 Temperature Control in the Measurement of Particle Volumes by the Isopiestic Method: F. W. Leavitt and S. Kaye .... .................. 934 Occurrence of Three Red Blood Cell Antigens in Rabbit as the Result of Interaction of Two Genes: C. Cohen ..... ....................... 935 Efficacy of Striatal Shocks in Avian Conditioned Behaviors: A. L. Towe .... 936 Chinese Walls of New Cave, Carlsbad Cavems National Park: D. M. Black 937 Some Potassium-Argon Ages for Western Canada: H. A. Shillibeer and R. A. Burwash ..... ........................... 938 "Whirling Behavior" in Dogs as Related to Early Experience: W. R. Thompson, R. Melzack, T. H. Scott .... ..................... 939 Action of Some Centrally Acting Drugs on Ion Transport in Red Cells: M. E. Greig and A. J. Gibbons ...... .............................. 939 Enzymatic Detoxification Mechanism for Viadril: W. B. Jakoby and G. Tomkins ...... .............................. 940 Simple Procedure for Identification and Rapid Counting of Mast Cells in Tissue Sections: E. W. Smith and W. B. Atkinson .... ............ 941