A new microscopy technique called nonlinear SIM gives a better look at how the cell’s internal scaffolding, or cytoskeleton, changes over time. Shown is a still image from a video of cytoskeletal proteins in a mouse embryonic fibroblast cell.
D. Li et al/Science 2015
CHEMICAL COCKTAIL Adult skin cells begin to transform into neurons (blue circles with colorful tendrils) just a week after being dosed with seven small-molecule drugs.
Courtesy of Gang Pei and Jian Zhao
Stem cells, shown here in mouse cells colored red and green, around the central vein of the liver give rise to progeny (in green).