An automated system that conducts, monitors, and validates a cell-line-based biological experiment including one or more treatment compounds or other external stimuli. In one preferred embodiment, the system comprises two principal subsystems, and optionally accessory subsystems. A first principal subsystem is an automated laboratory experiment manager for designing the biological experiment, for constructing an assay plate used to conduct the biological experiment, and for managing one or more of the processes that constitute the biological experiment. A second principal subsystem is an automated data analysis manager for analyzing images, for instance produced by the image production system, to detect image data including biological markers and objects, for analyzing the resulting image data to produce biological data, and for analyzing the biological data to produce biological phenotypes and treatment compound signatures.