Science Innovations By henrycruzreyes 1824 Henri Dutrochet discovers that tissues are composed of living cells. 1885 Louis Pasteur and Emile Roux develop the first rabies vaccine 1928 Alexander Fleming notices that a certain mould could stop the duplication of bacteria, leading to the first antibiotic: penicillin. 1953 James D. Watson and Francis Crick describe the structure of DNA. Jul 20, 1969 Astronauts walk on the Moon 1972 The DNA composition of chimpanzees and gorillas is discovered to be 99% similar to that of humans. 1973 Martin Cooper develops the first handheld cellphone (mobile phone). 1980 The U.S. patent for gene cloning is awarded to Cohen and Boyer. 2002 Rice becomes the first crop to have its genome decoded. 2003 The Human Genome Project is completed, providing information on the locations and sequence of human genes on all 46 chromosomes.