Texas A&M is also doing biological research with our units:

http://hyrel3d.net/papers/Hydrogels_...ngineering.pdf

3D-printed nanocomposite gels were fabricated with fused deposition modeling. Prepolymer solutions containing 8%GelMA (80% methacrylation degree), 0.25% photoinitiator,and 2% nanosilicates, by weight, were mixed at elevated temperature and allowed to cool to room temperature beforeprinting. Solutions were loaded into a HYREL Engine 3D printer equipped with an EMO-25 emulsifiable extruder and a UVblocking, 22 AWG (200 μm) tapered dispensing tip (Fisnar). Acylinder model, h = 5 mm, diameter = 20 mm, was used as the physical template for printing. Slic3r v1.1.7 was used to createthe g-code for printing. The following settings were used for printing: printing speeds of 5 mm/s, nonprinting speeds of25 mm/s, layer thickness of 200 μm, infill of 50% (090,rectilinear grid), extrusion width of 1.0 mm, and no perimeters,top layers, or bottom layers. Constructs were subjected toUV light for the duration of the print (6 min and 50 s). The UV source consists of four UV LEDs (365 nm, 500 mW radiant flux)positioned at a 5 cm vertical distance and 2 cm radial distance from the printing nozzle. After printing, gels were subjected to an additional 5 min of cross-linking under the UV printing source