Single cell RNA sequencing is a very useful technique that relies on microfluidics. It allows researchers to isolate individual cells then "read" the RNA conten

Single cell RNA sequencing is a very useful technique that relies on microfluidics. It allows researchers to isolate individual cells then "read" the RNA content of them. This lets you identify (very approximately) what behaviors a cell is doing in the tissue it came from. Still mostly a research tool, but it's going to move into the clinic in the next 10 years, I'd guess. 10x Genomics (https://www.10xgenomics.com/ https://www.10xgenomics.com/) is the biggest company building the machines for this. They're publicly traded.