Look, the Cell Cycle!
Pure Pedantry links to an awesome paper on visualizing the cell cycle in mice using fluorescent markers. They can even look at the cell cycle state of cells in histological sectionsof mice! Check out the blog post, because Jake Young highlights the coolest picture and the coolest video in the paper; the movie at Cell and ScienceDirect seem to be down, so you can see the video at Pure Pedantry or at Google Video.
