Comparative phenotype analysis of two or more microorganisms using a plurality of substrates within a multiwell testing device
First Claim
1. A method for comparing at least two cell preparations, comprising the steps of:
- a) providing a first testing device and a duplicate second testing device, each comprising a plurality of testing wells and at least two test substrates selected from the group consisting of nitrogen sources, phosphorus sources, sulfur sources, and auxotrophic supplements, and wherein each well contains at least one of said test substrates;
b) preparing a first suspension comprising a first cell preparation, in an aqueous solution, and a second suspension comprising a second cell preparation in an aqueous solution;
c) introducing said first suspension into said wells of said first testing device, and said second suspension into said wells of said second testing device;
d) detecting the response of said first and second cell preparations to said at least two test substrates, wherein said response is detected using a single chromogenic compound; and
e) comparing the response of said first and second cell preparations.
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Accused Products
Abstract
The present invention relates to growing and testing microorganisms in a multitest format which utilizes a gel forming matrix for the rapid screening of clinical and environmental cultures. The present invention is suited for the characterization of commonly encountered microorganisms (e.g., E. coli, S. aureus, etc.), as well as commercially and industrially important organisms from various and diverse environments (e.g., the present invention is particularly suited for the growth and characterization of the actinomycetes and fungi). The present invention is also particularly suited for comparative analysis of phenotypic differences between cell types, including strains of microorganisms that have been designated as the same genus and species, as well as other cell types (e.g., mammalian, insect, and plant cells).
44 Citations
16 Claims
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1. A method for comparing at least two cell preparations, comprising the steps of:
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a) providing a first testing device and a duplicate second testing device, each comprising a plurality of testing wells and at least two test substrates selected from the group consisting of nitrogen sources, phosphorus sources, sulfur sources, and auxotrophic supplements, and wherein each well contains at least one of said test substrates;
b) preparing a first suspension comprising a first cell preparation, in an aqueous solution, and a second suspension comprising a second cell preparation in an aqueous solution;
c) introducing said first suspension into said wells of said first testing device, and said second suspension into said wells of said second testing device;
d) detecting the response of said first and second cell preparations to said at least two test substrates, wherein said response is detected using a single chromogenic compound; and
e) comparing the response of said first and second cell preparations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A kit for determining the phenotypes of at least two organisms, comprising:
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i) a first testing device and a duplicate second testing device, each containing a plurality of wells and at least two test substrates selected from the group consisting of nitrogen sources, phosphorus sources, sulfur sources, and auxotrophic supplements, and wherein each well contains at least one of said test substrates;
ii) a single chromogenic compound for detecting the response of said organisms to said at least two test substrates;
iii) a first aqueous suspension; and
iv) a second aqueous suspension. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification