G - Physics – 01 – N
Patent
G - Physics
01
N
73/51.5
G01N 21/00 (2006.01)
Patent
CA 1160860
ABSTRACT OF THE DISCLOSURE Apparatus is disclosed for quantitating relatively small amounts of a clinically significant compound which had been fluorescently tagged. The apparatus has a transparent cell for holding a prepared liquid sample (which includes fluorescent particles). A light source generates a stable light beam that is focused on -the sample in the cell so that the beam causes fluorescent emissions by the particles in the sample. The intensity of the emissions is a function of the intensity of the light beam and the concentration of the fluorescent particles in the sample. A detector in optical communication with the cell receives and senses photons defining the fluorescent emissions. The number of sensed photons is counted and the total count from the sample over a fixed time period is a measure of the number of fluorescent particles in the sample. A microcomputer system is further disclosed including a primary microproces- sor which is interfaced via latches and buffers on a data bus to a system memory, system peripherals, and major system subassemblies.
376189
Curry Robert E.
Simonsen Michael G.
Bio-Rad Laboratories Inc.
Fetherstonhaugh & Co.
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