English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

It is commonly assumed that either frogs or cats may be used for the assay of digitalis, provided that suitable standards and experimental techniques are employed. Assay in frogs is the official method of the tenth revision of the United States Pharmacopoeia. The British Pharmacopoeia (1932) permits the use of both animals. Occasionally, however, there are encountered substances in digitalis leaf or glucosides from plants related pharmacologically to digitalis which are not of the same relative potency in frogs and in cats. The cumulation experiments in animals and the clinical experiments reported in this paper were undertaken to learn, in the case of two different samples of digitalis leaves, whether the results could be correlated with a method of assay.

the journal of clinical investigation/the journal of clinical investigation

A STUDY OF THE STANDARDIZATION OF DIGITALIS. II. THE RELATIONSHIP BETWEEN LABORATORY METHODS OF ASSAY AND POTENCY AS DETERMINED BY EXPERIMENTAL CUMULATIVE POISONING AND CLINICAL STANDARDIZATION