| A | B |
| Edward Jenner | developed small pox vaccine |
| Elizabeth Blackwell | 1st woman physician in US |
| Ambroise Pare | Improved battlefield tx of injuries |
| Clara Barton | founded American Red Cross |
| Marie Curie | Isolated radium |
| Gregor Mendel | Studied patterns of heredity |
| William Harvey | Described one way circulation of blood |
| Romans | Began public health & sanitation systems |
| Wilheim Roenten | Discovered X-rays in 1895 |
| Hippocrates | Known as "Father of Medicine" |
| Alexander Fleming | Discovered penicillin in 1928 |
| Leonardo da Vinci | Artist who used dissection to draw human body |
| Egyptians | earliest people known to maintain accurate health records |
| Louis Pasteur | began heating milk to kill bacteria |
| Chinese | Use acupuncture to relieve pain and congestion |
| Robert Koch | developed culture plate method to identify pathogens |
| Florence Nightingale | founder of modern nursing |
| Joseph Lister | began using disinfectants and antiseptics during surgery |
| Gabriel Fahrenheit | created first mercury thermometer |
| Jonas Salk | developed polio vaccine in 1952 |
| Rhazes | Arab physician who used animal gut for suture material |