Affiliation:
1. Venereal Disease Research Laboratory, National Communicable Disease Center, Atlanta, Georgia 30333
Abstract
The contributions of four components to the error in the microscopic enumeration of spirochetes (
Treponema pallidum
) by the method of Morgan and Vryonis were determined. Where N
s
= the number of slides counted, N
r
= the number of recounts of 50 fields per slide, N
p
= the number of pipettes used, and N
e
= the total number of counts of 50 fields made, the coefficient of variation is 2 times the square root of (17.5
2
/N
s
+ 18.6
2
/N
r
+ 14.8
2
/N
p
+ 6.1
2
/N
e
) with 95% confidence.
Publisher
American Society for Microbiology
Subject
General Pharmacology, Toxicology and Pharmaceutics,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine
Reference6 articles.
1. Laboratory standards in relation to chance fluctuations of the erythrocyte count as estimated with the hemocytometer;Berkson J.;J. Amer. Statist. Ass.,1935
2. Error of estimate of the blood cell count as made in the hemocytometer;Berkson J.;Amer. J. Physiol.,1940
3. Collart P. G. Poggi and M. Dunoyer and F. Dunoyer. 1967. Experimental research on the behavior of three Treponema pallidum strains. WHO/VDT/RES/67.125.
4. The minimum infectious inoculum of Spirochaeta pallida (Nichols strain) and a consideration of its rate of multiplication in vivo;Magnuson H. J.;Am. J. Syphilis Gonorrhea Venereal Diseases,1948
5. A method for quantitation of inocula in experimental syphilis;Morgan H. J.;Am. J. Syphilis Gonorrhea Venereal Diseases,1938
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献