My daughter was pretty annoyed with her iPod case (with a screen protector). It had this interference pattern on it – here is a vine version. This is called a thin film interference pattern. Basically ...

Figure 1: In vitro RNAi screen for genes involved in stem cell long-term self-renewal. Figure 3: Tbx1-null stem cells fail in an in vivo assay for stem cell self-renewal and long-term tissue ...