And in both the case of the tuberculosis ward and the antihistamine, someone had to be able to recognize that a drug that was designed to do one thing -- treat tuberculosis or suppress allergies -- could be used to do something very different -- treat depression.
E no caso do pavillón de tuberculosos e mais no do antiestamínico, alguén se deu conta de que o fármaco creado  para facer unha cousa, --tratar a tuberculose ou suprimir alerxias-- podería usarse para algo moi diferente --tratar a depresión.