An experimental system includes an imaging unit which generates image data by imaging a sample, and an observation moving mechanism which changes a position of the imaging unit. The system also includes a supply and removal unit which supplies a liquid to the sample or removes the liquid from the sample, an operation moving mechanism which changes a position of the supply and removal unit, and a pump which moves the liquid through the supply and removal unit. Furthermore, the system includes a control circuit which controls operations of the observation moving mechanism and the operation moving mechanism such that the positions of the imaging unit and the supply and removal unit change together, and which controls an operation of the pump in accordance with the positions of the imaging unit and the supply and removal unit.
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