Espinosa-Meléndez E, Lal S, Nair N P, Chang T M
Artif Organs. 1979 Nov;3(4):375-7.
Plasma beta-endorphin was measured in 35 chronic schizophrenic patients (15.47 +/- 15.39 pmol/L) and 3 normal volunteers (19.55 +/- 11.23 pmol/L). There was no significant difference between the levels of the two groups.