Marcello Malpighi was an Italian physician and biologist who is considered one of the founders of microscopic anatomy. He made significant contributions to the understanding of the structure and function of various organs and tissues, particularly through his use of the microscope. Malpighi's work laid the groundwork for the development of modern histology and embryology. He is also known for his studies on the structure of the lungs, kidneys, and skin. His pioneering research has had a lasting impact on the fields of biology and medicine.