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This journal provides immediate access to some articles. Volume 28(11); November 1942 Astronomy On the Material Ejected from Novae PMCID: PMC1078522 On the Dimensions and Constitution of Variable Stars PMCID: PMC1078523 A Study of the RV Tauri Variables PMCID: PMC1078524 Galactic and Extragalactic Studies: XVI. Photographic Amplitudes of Classical Cepheids PMCID: PMC1078525 Bacteriology Some Factors Affecting the Toxicity of Cultures of Shigella Dysenteriae PMCID: PMC1078517 Biochemistry The Rôle of Intracellular Cations on Liver Glycogen Formation in Vitro PMCID: PMC1078521 Genetics The Fusion of Broken Ends of Chromosomes Following Nuclear Fusion PMCID: PMC1078518 Non-Random Uncoiling in Heterobrachial Chromosomes PMCID: PMC1078519 Pathology Tumor Formation by Attenuated Crown-Gall Bacteria in the Presence of Growth-Promoting Substances PMCID: PMC1078520 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||