[Jennifer Fang]

Hi Stephen,

I’m a postdoc in the Hughes lab currently, and since substrate stiffness is known to be pretty critical to endothelial cell signaling (e.g. https://www.scirp.org/journal/paperinformation.aspx?paperid=115388 among others), we do spend time optimizing that aspect of our gels as part of our optimization process when working with different cells.