van der Laan, JWvan Loveren, HKrajnc-Franken, MKrajnc, E2025-03-122025-03-121990https://rivm.openrepository.com/handle/10029/632338Effect of subchronic administration of morphine on the immune system in the rat.ArticleIn: Ree JM van, Mulder AH, Wiegant VM, Wimersma Greidanus TB van, eds. New leads in opioid research. Proceedings of the international narcotics research conference, Noordwijkerhout, The Netherlands, July 1990. Amsterdam: Excerpta Medica, 1990;328-312025-03-12