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Ring test

ring test --> ring precipitin test

A precipitin test in which antigen solution is carefully layered over antibody solution in a tube; as diffusion proceeds, a disk of precipitate forms where the antibody ratio is optimal.

Synonym: ring test.


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Conflicting results of Gram-Negative unknown

... peach to yellow *The next step of the flow chart asks if the urease test is pigment positive or pigment negative...not quite sure what that means. ... been discussed in lab 6. Indole test *Negative RESULTS: No cherry red ring on top of liquid layer 7. Citrate test *VERY CONFLICTED ABOUT RESULTS, ...

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by Jrh21854
Sun Dec 01, 2013 8:25 pm
 
Forum: Microbiology
Topic: Conflicting results of Gram-Negative unknown
Replies: 0
Views: 694

indole test reaction

guys, i used Lauryl Tryptose Broth for indole test, since the Techical Data Sheet of LTB says it can be used for such biochemical ... 24 hrs. i dropped kovacs reagent to the tubes, after a while 1 tube has a red ring while the other tubes has green ring. And then after a while the tube with ...

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by magandangbutiki
Fri Aug 02, 2013 7:53 am
 
Forum: Microbiology
Topic: indole test reaction
Replies: 0
Views: 463

Re: Microbiology Investigation improvements?

... non-virulent. Most neonatal E. coli meningitis infections occur during or after parturition, so whether the mother's diet will influence the ... be used, and all equipment and media will be sterile until used. The test will be repeated 3 times to ensure consistent results. 1. Prepare 3 ...

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by Squirrell
Mon Feb 20, 2012 8:30 am
 
Forum: General Discussion
Topic: Microbiology Investigation improvements?
Replies: 11
Views: 5499

Microbiology Investigation improvements?

... non-virulent. Most neonatal E. coli meningitis infections occur during parturition, so whether the mother's diet will influence the susceptibility ... be used, and all equipment and media will be sterile until used. The test will be repeated 3 times to ensure consistent results. 1. Prepare 3 ...

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by Squirrell
Fri Feb 17, 2012 9:16 pm
 
Forum: General Discussion
Topic: Microbiology Investigation improvements?
Replies: 11
Views: 5499

Re: Theories - Origin of Life

... or whether it could give rise to Darwinian natural selection. The ring-of-life hypothesis proposes that eukaryotes arose from a fusion of archaeans ... for this hypothesis, though more viral genomes are needed to thoroughly test the hypothesis. These four hypotheses offer creative and varied ideas ...

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by scottie
Thu Jul 28, 2011 10:06 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755260
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