P. W. C.
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Radioactive phosphorus has now been used therapeutically for several years, chiefly in the treatment of leukemia and polycythemia. Although the number of cases treated and the period of observation are still small, enough has been learned to warrant some tentative conclusions as to the value and limitations of this drug.
When ordinary phosphorus (P31) is bombarded with deuterons (nuclei of heavy hydrogen) emitted at high speed by a cyclotron, an additional neutron is forced into the nucleus of some of the phosphorus atoms. This increases the mass of the atom (P32), which now contains 15 protons and 17 neutrons. The
C. PW. RADIOACTIVE PHOSPHORUS AS A THERAPEUTIC AGENT. Ann Intern Med. ;25:742–746. doi: 10.7326/0003-4819-25-4-742
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Published: Ann Intern Med. 1946;25(4):742-746.
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