Abstract: The present invention provides methods of differentiating pericytes from pluripotent stem cells comprising culturing steps in chemically defined culture medium. A population of exogenously derived pericytes from PSCs are also contemplated. Further uses of the exogenously cultured pericytes for an in vitro disease model or in vitro angiogenesis assay are contemplated, including an in vitro 3D model of vasculature.

Abstract: Hydrogel Compositions and methods of using hydrogel compositions are disclosed. Advantageously, the hydrogel compositions offer the ability to rapidly screen substrate components for influencing cell attachment, spreading, proliferation, migration, and differentiation. In particularly suitable embodiments, the hydrogel compositions of the present disclosure may be used to promote tubulogenesis of endothelial cells.

Abstract: Hydrogel Compositions and methods of using hydrogel compositions are disclosed. Advantageously, the hydrogel compositions offer the ability to rapidly screen substrate components for influencing cell attachment, spreading, proliferation, migration, and differentiation. In particularly suitable embodiments, the hydrogel compositions of the present disclosure may be used to promote tubulogenesis of endothelial cells.

Abstract: An automatic focusing system for a slide projector which utilizes a pair of photocells is provided with a non-linear response characteristic to introduce a change in the sensor balance point when a glass covered film slide is projected as opposed to when an open film slide is projected. Accordingly, glass covered film slides and open film slides can be randomly intermixed without changing the projector focus.

Abstract: A microprocessor is utilized to monitor and control the operation of an image projector and a magnetic tape cassette player. Inaudible cueing tones recorded on the tape allow the recorded narrative to be kept in synchronization with the image projected. A sync counter within the microprocessor keeps track of the amount and direction by which the image and tape are out of synchronism. The microprocessor controls a visual indication to the operator that shows the direction in which the tape must be moved to regain synchronization. When the tape is moved forward to achieve synchronization, the microprocessor will stop the tape after the cue pulse that precedes the narrative for the associated image. When the tape is moved in the reverse direction to achieve synchronization, the microprocessor will stop the tape just beyond the cue pulse at the beginning of the desired narrative.