english: So by then, Robert had understood that very likely his patients were suffering from depression even after being cured of their cancer, because the cancer drug had stopped newborn neurons from being generated.
non_english: Toen begreep Robert dat zijn patiënten zeer waarschijnlijk aan depressie leden, zelfs na de genezing van hun kanker, omdat het kankergeneesmiddel de vorming  van neuronen had tegengehouden.