A cancer cell in the middle of its feast.

In this experiment, the nutrient outside the cell is labelled with a dye (orange), and the cell is in dark blue. Each circular bubbles that the cell takes in is a bag of nutrients that the cancer cell will digest later for energy. This process is known as macropinocytosis and many cancer cells are known to be incredibly hungry. They use this uptake process to take in as much nutrients as possible to fuel their metabolism and eventually give them the needed energy to grow and spread.