Specialized in tools for bioengineering custom microenvironments, Alvéole presents PRIMO: contactless and maskless custom photopatterning to create and fine-tune in vitro cell microenvironments. PRIMO allows to control the topography (via microfabrication and hydrogel structuration) and biochemistry (via protein micropatterning) of all standard cell culture substrates (stiff, soft, flat, microstructured) for reliable and reproducible in vitro microenvironments and better cell experiments.