| 摘要 |
A system (30) for assaying a fluid sample by detection of radiation emitted from a ligand/conjugate complex formed on a plurality of beads (40) dimensioned within a specified range of diameters, the beads being disposed as a porous mass in a conduit (34) adjacent a fluid-porous screen (42) having pores of lesser diameter than the range of diameters of the beads. A plurality of paramagnetic particles (42) is suspended across the conduit by a magnetic field (43, 44) of sufficient intensity to array the paramagnetic particles as the fluid-porous screen. |
