Scientists at the University of Twente's MESA+ and MIRA research institutes in the Netherlands have built micropyramids for 3D observation of cells. The scientists used 3D micro and nanofabrication technology to create the pyramids. The sides of the pyramids are open, which allows cells to continue to interact with other cells while still being contained in the micropyramids.
Nina Sen is a frequent contributor to Live Science’s Life’s Little Mysteries series: an exploration and explanation of our world’s phenomena, both natural and man-made. She also writes astronomy photo stories for Live Science's sister site Space.com.