| A | B |
|---|
| Gabriel Fahrenheit | Created the first mercury thermometer in 1714 |
| Anton van Leeuwenhoek | Invented the microscope in 1666 |
| Rene Laennec | Invented the stethoscope in 1816 |
| Elizabeth Blackwell | Became the first female physician in the United States in 1849 |
| William Roentgen | Discovered X-rays in 1895 |
| Robert Koch | Developed the culture plate method to identify pathogens in 1882 |
| Marie Curie | Isolated radium in 1910 |
| Florence Nightingale | Founder of modern nursing |
| William Harvey | Described the circulation of the blood to and from the heart in 1628 |
| Louis Pasteur | Proved microorganisms cause disease and created a vaccine for rabies |
| Hippocrates | Father of Medicine |
| Paul Ehrlich | Physician who believed the body is regulated by four fluids or humors |
| Leonardo DaVinci | Artist who used dissection to draw the human body |
| Rhazes | An Arab physician who began the use of animal gut for suture material |
| Claudius Galen | Published first anatomy book |
| Edward Jenner | Developed a vaccine for smallpox in 1796 |
| Ambrose Pare | Called the father of modern surgery |
| Gregory Mendel | Established the patterns of heredity |
| Joseph Lister | began using disinfectants during surgery |
| Sir Alexander Fleming | Discovered Penicillin |
| Jonas Salk | Developed the polio vaccine in 1952 |
| Christian Barnard | Performed the first successful heart transplant |
| Francis Crick and James Watson | Described how DNA carries genetic material |
