Answer:
All cells come from pre-existing cells
Step-by-step explanation:
Rudolf Virchow, a German Physician, stated the theory that all cells arise from pre-existing cells. He used this theory to explain disease pathology at the cellular level. His work helped clarify that diseases occur not at tissue or organ level, but at the cellular level. This resulted in more accurate diagnosis of diseases by other scientists.
His legacies includes being among the first to use animals in his research, first to name numerous diseases and also the creation of many medical terms still in use today.