If the question, 'Why is the heart hollow?', had a profound impact on all intellectual disciplines, would you expect any less of the question, 'Why i… - Richard Bergland

Despite the evidence that ventricular hormones do not make their way out of the ventricle, the presence of large ventricles in many schizophrenic patients, and the ability of two-dimensional gels to provide a profile of peptides in the ventricle, not a single catheter has been placed into the ventricle of a schizophrenic patient to measure the peptides in the ventricle. ...There is no animal model for this disease, the answer can only come from human studies.

Physicians and scientists will measure brain hormones—in ventricular fluid and elsewhere—will link these to specific diseases, and will devise space-age techniques to restock the mind's hormonal pantries. The only question is, 'When?'

Genetic engineers are powerless in all of this without some cooperative effort from people working in allied fields.