In 1691, he reluctantly became the papal personal physician.  
In 1691, he reluctantly became the papal personal physician.  Qualifications included his advances in anatomy and embryology and his pioneering use of the microscope.  Even today his name is given to a layer of the epidermis and a structure discovered while studying the organs of silkworms. For ten points, name the man who explained the link between respiration and circulation and who discovered capillaries.
In 1691, he reluctantly became the papal personal physician.  
Marcello Malpighi