Patent ID: 6727076
Filing Date: 2004-04-27
Classification: C12Q,G01N,Y10S

Abstract:
A method for comparing at least two cell preparations, comprising the steps of:a) providing a testing device comprising a plurality of testing wells and at least two test substrates selected from the group consisting of phosphorus sources selected from the group consisting of phosphorus-containing compounds, sulfur sources selected from the group consisting of sulfur-containing compounds, and auxotrophic supplements selected from the group consisting of amino acids, vitamins, polyamines, lactones, fatty acids, nucleic acid bases, nucleosides, and nucleotides, wherein each well comprises at least one of said test substrates; b) preparing a first cell preparation and a second cell preparation, wherein said first and said second cell preparations are each in an aqueous solution; c) introducing said first and second cell preparations into said testing wells of said testing device; d) detecting the response of said first and second cell preparations to said at least two test substrates using a single colorimetric indicator; and e) comparing the response of said first and second cell preparations.