We manipulated people's serotonin levels by giving them this really disgusting-tasting artificial lemon-flavored drink that works by taking away the raw ingredient for serotonin in the brain.
Manipulamos los niveles de serotonina de la gente dándoles una bebida artificial sabor limón muy desagradable que funciona extrayendo el ingrediente básico para la serotonina en el cerebro.