Figure 1From: Determine the quality of human embryonic stem colonies with laser light scattering patternsSketch of optical system. In this optical system, laser light (wavelength = 633 nm) was guided to incident on the hESCs colony perpendicularly. Forward scattering pattern of the colony was collected with CMOS sensor in the back of culture dish. During the scanning step, specimens were tracked and transported automatically by motor stage.Back to article page