Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Estimation of Vitamin A

Nature volume 137, page 402 (1936)Cite this article

Abstract

THE correspondence upon this subject which has appeared in NATURE during the last few weeks has directed attention to the extremely unsatisfactory state which those of us who are interested in the matter from a commercial as well as from a scientific aspect have long known to exist.

Access through your institution
Buy or subscribe

This is a preview of subscription content, access via your institution

Access options

Access through your institution

Buy this article

  • Purchase on SpringerLink
  • Instant access to full article PDF
Buy now

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

Author information

Authors and Affiliations

  1. Crookes Laboratories, London, N.W. 10

    JOHN F. WARD & R. T. M. HAINES

Authors
  1. JOHN F. WARD
    View author publications

    Search author on:PubMed Google Scholar

  2. R. T. M. HAINES
    View author publications

    Search author on:PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

WARD, J., HAINES, R. Estimation of Vitamin A. Nature 137, 402 (1936). https://doi.org/10.1038/137402b0

Download citation

  • Issue date:

  • DOI: https://doi.org/10.1038/137402b0

Search

Advanced search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing