Answer:
Step-by-step explanation:
Anton van Leeuwenhoek: He discovered blood cells and microscopic nematodes, and studied the structure of wood and crystals.
Robert Hooke: He most famously discovered the Law of Elasticity (or Hooke's Law) and did a huge amount of work on microbiology
Rudolf Virchow: Virchow launched the field of cellular pathology. He stated that all diseases involve changes in normal cells, that is, all pathology ultimately is cellular pathology.