| − | Some important figures in more recent centuries, include [[Michael Servetus]], who was "one of the first men to give a nearly accurate description of the human[[ circulatory system]] was, during the early sixteenth century, A.D". [[Alexander Fleming]] the discover of the value of [[penicillin]], and [[Florence Nightingale]], the founder of modern nursing. | + | Some important figures in more recent centuries, include [[Michael Servetus]], who was "one of the first men to give a nearly accurate description of the human[[ circulatory system]] was, during the early sixteenth century, A.D". |
| | + | Another major breakthrough came with [[Edward Jenner]]'s ( 1749 – 1823) discovery that milkmaids developed an immunity to [[smallpox]], because they had earlier contacted cowpox,, mild disease of animals. This led to the invention of a smallpox vaccine, which Jenner first tested in May 14, 1796, by inoculating eight-year-old James Phipps, the son of his gardener. |