St. Paul makes it clear that we are the body of Christ. St. Paul didn't use the analogy of cells, he used hands and eyes and feet, but go with me on this one. They stick together. I don't know how, but they do. When they separate, they die.
Scientists can do amazing things, and they can make human cells live away from the body for a while.
It takes a scientist to spoil a perfectly good analogy. Never mind, let's talk about how the cells are in a natural state. They are specialized. There are skin cells, brain cells, muscle cells. Each according to their own gifts.