Differential binding of potential sensitive materials by...

Details Differential binding of potential sensitive materials by... Differential binding of potential sensitive materials by...

G - Physics

01

N

150/11

G01N 33/52 (2006.01) G01N 15/14 (2006.01) G01N 33/50 (2006.01) G01N 33/569 (2006.01)

Patent

CA 1312537

Abstract The method of the present invention comprises contacting a suspension of viable lymphocytes with a solution containing a membrane potential sensitive fluorescent dye, The contact between the lymphocyte suspension and the MPS dye is maintained for sufficient time to permit labelling of the lymphocytes by the MPS dye material. The labelled lymphocytes are passed individually through a focused source of excitation energy causing any MPS dye material to fluoresce. The fluorescent emission from each cell is recorded as a pulse and the number of pulses of each intensity are recorded, The distribution of the number of pulses versus the intensity is prepared distribution is bi- modal. A first peak includes pulses of low flourescence intensity and a second peak comprises pulses of high fluorescence intensity. A ratio of the total counts of low fluorescence intensity to the total counts of high fluorescence intensity produces a factor which distinguishes lymphocytes derived from bodies afflicted with malignancy from bodies which are not afflicted with malignancy.

552502

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