To realize two functions of a bright field illumination and a dispenser by a simple configuration in a drug-discovery screening device.SOLUTION: The drug-discovery screening device includes: a bright field illumination; a dispenser; a fixed shaft; a bright field illumination movable shaft, which moves on the fixed shaft and is provided with the bright field illumination; and a dispenser movable shaft, which moves on the fixed shaft and is provided with the dispenser.SELECTED DRAWING: Figure 1
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