Ivan C. Hall, M.S.
JAMA. 1919;72(4):274-275. doi:10.1001/jama.1919.26110040001016.
Text Size: A A A
Published online

Repeated plating and streaking out on agar plates are universally acknowledged to be fairly reliable procedures for the isolation of aerobic bacteria irrespective of the possible concurrence of obligative anaerobes, for the latter, if present, are completely eliminated by the conditions of aerobic culture. But the same procedures applied under anaerobic conditions for the isolation of obligative anaerobes from cultures mixed with aerobes involve much uncertainty owing to the fact that many aerobes are also facultative anaerobes. It is therefore necessary to eliminate all aerobes from the culture before attempting the purification of obligative anaerobes by any method of surface colony isolation. It is an easy matter to eliminate nonsporulating contaminations by heating cultures containing sporulating anaerobes to a temperature sufficient to destroy vegetative forms alone; but selective heating is a total failure for the elimination of hay bacilli, since most of these organisms are less susceptible to heat than


Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

First Page Preview

View Large
First page PDF preview




Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).


Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

Related Content

Customize your page view by dragging & repositioning the boxes below.