%A S Nanda %A M A Zafar %A S Singh %A J A Malik %A R Gautam %A A Ghosh %A D Basu %A J N Agrewala %J Journal of biosciences %T Chronic administration of morphine provokes generation of antibodies to morphine and immunosuppression in individuals with opioid use disorder %D 2025 %L open3247 %V 50