Skip to main content

Main menu

  • Home
  • Articles
    • Current
    • Special Feature Articles - Most Recent
    • Special Features
    • Colloquia
    • Collected Articles
    • PNAS Classics
    • List of Issues
  • Front Matter
    • Front Matter Portal
    • Journal Club
  • News
    • For the Press
    • This Week In PNAS
    • PNAS in the News
  • Podcasts
  • Authors
    • Information for Authors
    • Editorial and Journal Policies
    • Submission Procedures
    • Fees and Licenses
  • Submit
  • Submit
  • About
    • Editorial Board
    • PNAS Staff
    • FAQ
    • Accessibility Statement
    • Rights and Permissions
    • Site Map
  • Contact
  • Journal Club
  • Subscribe
    • Subscription Rates
    • Subscriptions FAQ
    • Open Access
    • Recommend PNAS to Your Librarian

User menu

  • Log in
  • My Cart

Search

  • Advanced search
Home
Home
  • Log in
  • My Cart

Advanced Search

  • Home
  • Articles
    • Current
    • Special Feature Articles - Most Recent
    • Special Features
    • Colloquia
    • Collected Articles
    • PNAS Classics
    • List of Issues
  • Front Matter
    • Front Matter Portal
    • Journal Club
  • News
    • For the Press
    • This Week In PNAS
    • PNAS in the News
  • Podcasts
  • Authors
    • Information for Authors
    • Editorial and Journal Policies
    • Submission Procedures
    • Fees and Licenses
  • Submit

New Research In

Physical Sciences

Featured Portals

  • Physics
  • Chemistry
  • Sustainability Science

Articles by Topic

  • Applied Mathematics
  • Applied Physical Sciences
  • Astronomy
  • Computer Sciences
  • Earth, Atmospheric, and Planetary Sciences
  • Engineering
  • Environmental Sciences
  • Mathematics
  • Statistics

Social Sciences

Featured Portals

  • Anthropology
  • Sustainability Science

Articles by Topic

  • Economic Sciences
  • Environmental Sciences
  • Political Sciences
  • Psychological and Cognitive Sciences
  • Social Sciences

Biological Sciences

Featured Portals

  • Sustainability Science

Articles by Topic

  • Agricultural Sciences
  • Anthropology
  • Applied Biological Sciences
  • Biochemistry
  • Biophysics and Computational Biology
  • Cell Biology
  • Developmental Biology
  • Ecology
  • Environmental Sciences
  • Evolution
  • Genetics
  • Immunology and Inflammation
  • Medical Sciences
  • Microbiology
  • Neuroscience
  • Pharmacology
  • Physiology
  • Plant Biology
  • Population Biology
  • Psychological and Cognitive Sciences
  • Sustainability Science
  • Systems Biology

Table of Contents

July 01, 1952; vol. 38 no. 7

Biochemistry

  • You have access
    Antibiotic Substances from Basidiomycetes
    Frederick Kavanagh, Annette Hervey, and William J. Robbins
    PNAS July 1, 1952 38 (7) 555-560; https://doi.org/10.1073/pnas.38.7.555
  • You have access
    Arginosuccinic Acid from Chlorella
    James B. Walker
    PNAS July 1, 1952 38 (7) 561-566; https://doi.org/10.1073/pnas.38.7.561

Chemistry

  • You have access
    The Mechanism of Polymerization of Fibrinogen
    John D. Ferry
    PNAS July 1, 1952 38 (7) 566-569; https://doi.org/10.1073/pnas.38.7.566

Genetics

  • You have access
    Pseudo-Wild Types in Neurospora Crassa
    M. B. Mitchell, T. H. Pittenger, and H. K. Mitchell
    PNAS July 1, 1952 38 (7) 569-580; https://doi.org/10.1073/pnas.38.7.569
  • You have access
    The Genotype of the Endosperm and Embryo as it Influences Vivipary in Maize
    Donald S. Robertson
    PNAS July 1, 1952 38 (7) 580-583; https://doi.org/10.1073/pnas.38.7.580
  • You have access
    Substrate Stabilization of Enzyme-Forming Capacity During the Segregation of a Heterozygote
    S. Spiegelman and W. F. DeLorenzo
    PNAS July 1, 1952 38 (7) 583-592; https://doi.org/10.1073/pnas.38.7.583

Mathematics

  • You have access
    An Algebra of Unbounded Operators
    J. M. G. Fell and J. L. Kelley
    PNAS July 1, 1952 38 (7) 592-598; https://doi.org/10.1073/pnas.38.7.592
  • You have access
    Commutative Operator Algebras
    J. L. Kelley
    PNAS July 1, 1952 38 (7) 598-605; https://doi.org/10.1073/pnas.38.7.598
  • You have access
    On the Poincaré Polynomial of the full Linear Group
    F. D. Murnaghan
    PNAS July 1, 1952 38 (7) 606-608; https://doi.org/10.1073/pnas.38.7.606
  • You have access
    On the Poincaré Polynomials of the Classical Groups
    F. D. Murnaghan
    PNAS July 1, 1952 38 (7) 608-611; https://doi.org/10.1073/pnas.38.7.608
  • You have access
    An Inequality with Alternating Signs
    H. F. Weinberger
    PNAS July 1, 1952 38 (7) 611-613; https://doi.org/10.1073/pnas.38.7.611

    See companion article:

    • An Acknowledgement
      - Jul 15, 1953

Pathology

  • You have access
    Poliomyelitis and the Weather
    Charles Armstrong
    PNAS July 1, 1952 38 (7) 613-618; https://doi.org/10.1073/pnas.38.7.613

Journal_Article

  • You have access
    National Academy of Sciences Organization: July 1, 1952
    PNAS July 1, 1952 38 (7) 619-653; https://doi.org/10.1073/pnas.38.7.619

Corrections

  • You have access
    Some Problems Involving Primitive Roots in a Finite Field
    PNAS July 1, 1952 38 (7) 618;
  • You have access
    The Number of Solutions of Certain Equations in a Finite Field
    PNAS July 1, 1952 38 (7) 618;
PreviousNext
Back to top

Browse PNAS issues

In this issue

  • Table of Contents
Sign up for alerts

Jump to

  • Biochemistry
  • Chemistry
  • Genetics
  • Mathematics
  • Pathology
  • Journal_Article
  • Corrections

PNAS Highlights. Top research, news, and commentary delivered straight to your inbox.

Site Logo
Powered by HighWire
  • Submit Manuscript
  • Twitter
  • Facebook
  • RSS Feeds
  • Email Alerts

Articles

  • Current Issue
  • Special Feature Articles – Most Recent
  • List of Issues

PNAS Portals

  • Anthropology
  • Chemistry
  • Classics
  • Front Matter
  • Physics
  • Sustainability Science
  • Teaching Resources

Information

  • Authors
  • Editorial Board
  • Reviewers
  • Subscribers
  • Librarians
  • Press
  • Site Map
  • PNAS Updates
  • FAQs
  • Accessibility Statement
  • Rights & Permissions
  • About
  • Contact

Feedback    Privacy/Legal

Copyright © 2021 National Academy of Sciences. Online ISSN 1091-6490