van der Laan, JWKrajnc, EIKrajnc-Franken, MAMvan Loveren, H2025-03-132025-03-131995https://rivm.openrepository.com/handle/10029/635843Immunotoxicological screening of morphine and methadone in an extended 28 day study in rats.ArticleInt J Immunopharmacol 1995; 17:535-432025-03-13