SynRAm inflammation model co-culture chip- Microvascular design Barrier type: Pillars, Distance between pillars: 50 μm, Pillar Diameter: 10 μm, Barrier height: 3 μm, Travel/barrier width: 50 μm, Device depth: 100 μm. The SynRAM 3D Inflammation Model has been developed to study the entire inflammation pathway in a realistic and dynamic environment.