A solid imaging printer for generating colorized three-dimensional models is disclosed. The system 100 comprises a virtual assay module 115 operable to generate simulated images of cell responses to one or more stimuli. The condition is that the carbon particulates has a mean diameter of 0. This invention allows clients to interact over a network in a fashion that is anonymous and unique to the session which the client is engaging in. When operating in the hi-speed mode, the drive-outlet is directly driven by the motor. Consequently, in the locking position, the teeth of the plate-shaped locking part which engage in the openings and recesses deform the edge areas of said opening or recesses in the event of a considerable load, for example in an accident.