You can only learn so much about cells by studying 2D pictures, and 3D microscope technology can produce an abundance of data that might be hard to decipher. Researchers at Carnegie Mellon University and Virginia Mason have an answer, though: let scientists walk 'inside' the cells. They've combined virtual reality with expansion microscopy (which grows samples by over 100 times) to explore cell data that would otherwise be too complex to handle. Once the cells have been imaged, labeled and compiled into data, a custom technique turns the 2D info into 3D environments.