XenoWorksTM is a modular microinjection system designed to meet a wide variety of application needs. Our experience with precision motor control has culminated in this state-of-the-art system. The XenoWorksTM Micromanipulator uses a classic inverted joystick design for excellent ergonomics, intuitively linking the user with the micropipette. Combined with our smooth, responsive steppermotor drives, the XenoWorksTM Manipulator provides exceptional mechanical stability, sensitivity, and range of movement. The XenoWorksTM Digital Microinjector was designed for precision manipulation of cells via an easy-to-use interface. The Digital Microinjector employs a self-contained vacuum channel for gentle suspension-cell holding applications. A second channel is available for both high-pressure injection and gentle positive/negative pressure for transfer of embryonic stem cells. Both injection duration and pressure are easily selectable using rotary knobs on the remote interface. The internal low-speed compressor removes the need for an external pressure supply. The XenoWorksTM family also includes the Analog Microinjector for simple cell holding and transfer applications, which incorporates the same smooth response and ergonomic design of our other XenoWorksTM products.