For the past few years, we have become very interested in the hydrodynamic trapping techniques pioneered by researchers at Stanford [Wheeler et al, 2003, Anal Chem], UC Berkeley [Dicarlo et. al, Lab Chip 2006], and MIT [Skelley et. al, 2009, Nature Methods]. Recently, we we have developed several new hydrodynamic trapping designs that enables highly efficient capture of single cells, and we have shown that the cells can be grown on chip for weeks. Stay tuned for more info.