You know, we're not mice, and you can't go into a living person with an illness and just pull out a few brain cells or cardiac cells and then start fooling around in a lab to test for, you know, a promising drug.
Ya saben, no somos ratones, y no podemos ir a una persona viva con una enfermedad y sacarle unas cuantas células cerebrales o cardiacas y empezar a trastear en un laboratorio para testar un fármaco prometedor.