1926 Minot & Murphy make classic report of oral liver as 1st effective treatment for pernicious anaemia.
1926 1st vaccine for pertussis.
1927 1st vaccine for tetanus.
1927 1st vaccine for tuberculosis.
1928 Fleming discovers penicillin.
1929 Berger develops human electroencephalography.
1929 Castle 1st describes mechanisms of Pernicious Anaemia.
1929 Eijkman: Noble Prize in Physiology/Medicine for discovery of vitamins essential to good health.
1929 Arinkin describes sternal puncture to obtain bone marrow.
1929 Wintrobe refines haematocrit technique & introduces RBC indices MCV, MCH & MCHC.