Patent ID: 7473529

Claim:
A method for detecting a detectably labeled cell or component thereof in a sample, which method comprises: (i) introducing a sample comprising one or more cells or components thereof, at least one cell or component thereof of which is detectably labeled with at least two detectable labels, into one or more flow cells of a flow cytometer, (ii) irradiating the sample with one or more light sources that are absorbed by the at least two detectable labels, the absorption of which is to be detected, and (iii) detecting simultaneously the absorption of light by the at least two detectable labels on the detectably labeled cell or component thereof with an array of photomultiplier tubes, which are operably linked to two or more filters that selectively transmit detectable emissions from the at least two detectable labels, wherein the two or more filters and the array of photomultiplier tubes are operably linked to the one or more light sources by one or more optical bodies, which do not comprise beam splitters or optic cables and which project the detectable emissions from the at least two detectable labels to the two or more filters, wherein the simultaneous detection of absorption of light by the at least two detectable labels indicates the presence of a detectably labeled cell or component thereof in the sample.