1. Psychoanalysis   Gregor Mendel   Sir Humphry Davy   Sigmund Freud   Wilhelm K. Roentgen   Hint Half-n-half Clue   2. Blood Circulation   Sir Humphry Davy   Sigmund Freud   Anton Von Leeuwenhock   William Harvey   Half-n-half Clue   3. Laws of Heredity   Neels H. D. Bohr   Gregor Mendel   Ronald Ross   Sir Humphry Davy   Half-n-half Clue   4. Modern Theory of Atomic Structure   Sir Fredrick Grant Banting   Hans Christian   Sigmund Freud   Neels H. D. Bohr   Half-n-half Clue   5. Penicillin   Alexander Fleming   Hans Christian   Sir Humphry Davy   Sir Isaac Newton   Half-n-half Clue   6. Insulin   Sir J. J. Thompson   Johan Kepler   Sir Humphry Davy   Sir Fredrick Grant Banting   Half-n-half Clue   7. Hydrogen   Christian Barnard   Sir Humphry Davy   William Harvey   Henry Cavendish   Half-n-half Clue