Researchers have developed a way to easily and affordably create tiny patterns on surfaces that can hold single cells or groups of cells, allowing scientists to study how cells behave in different shapes and sizes. This technique, called micropatterning, is useful for understanding how cells move, change shape, and interact with each other, which can help us learn more about how tissues form and function. The new methods, which use special gels that can be molded into different shapes, require minimal equipment and can be used to study a range of topics in biology and medicine.