In 1935, John Lawrence went to Berkeley and started his research by injecting some mice with leukemia with radioactive phosphorus generated by the cyclotron. He returned a few hours later after some fishing to find that the mice's condition had improved.
Lawrence moved to Berkeley in 1937 where he performed the first treatment of a human disease with a radioisotope
The first successful radioisotopic treatment also happened in 1939 when phosphorus-32 was used for the treatment of polycythemia vera, a blood disorder where there is an excess of red blood cells.
e first major achievement came in 1946 when a iodine-131 halted the growth of thyroid cancer and was found to be a useful tool in diagnosing thyroid diseases
new method of organ imaging was invaluable and marked the beginning of a new era in medical history