1. Automated cell growth/migration detection system, comprising: a container for containing a cell growth/migration matrix/medium into which deposited cells form a cell surface; an image sensor having a lens and capturing images through the lens; an image data processor for processing the images to determine cell growth/migration; and an actuator adapted to, in response to a control signal at least partially determined by output of the image data processor, incrementally vary distance between the lens and the cell surface such that the images correspond to varying imaging depths.