Patent ID: 7217531

Claim:
A composition for determining the presence or absence of one or more membrane-associated analytes, the composition comprising: a sensitizer-treated membrane containing one or more membrane associated analytes, the sensitizer-treated membrane comprising a cell surface membrane having photosensitizers attached, the photosensitizers each having a lipophilic moiety for anchoring the photosensitizers in the cell surface membrane; and one or more binding compounds, such that there is at least one binding compound specific for each of the one or more membrane-associated analytes, each binding compound having one or more molecular tags, each molecular tag being attached by a cleavable linkage, and the molecular tags of each binding compound being distinguishable from those of every other binding compound by one or more physical and/or optical characteristics; wherein at least one binding compound of the plurality is specifically bound to at least one membrane-associated analyte.