1. Opioids in cancer: The κ‑opioid receptor (Review)
   Qier Zhou et al, 2021, Molecular Medicine Reports CrossRef
2. Less Well-Known Consequences of the Long-Term Use of Opioid Analgesics: A Comprehensive Literature Review
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3. The pro- and anti-cancer effects of oxycodone are associated with epithelial growth factor receptor level in cancer cells
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4. The other side of the coin: Positive view on the role of opioids in cancer
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5. Morphine Suppresses Liver Cancer Cell Tumor Properties In Vitro and In Vivo
   Hao-Wen Zhang et al, 2021, Frontiers in Oncology CrossRef
6. Immunological Insights into Opioid-Free Anaesthesia in Oncological Surgery: A Scoping Review
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7. Mapping the Evidence for Opioid-Mediated Changes in Malignancy and Chemotherapeutic Efficacy: Protocol for a Scoping Review
   Jonathan E Constance et al, 2023, JMIR Research Protocols CrossRef
8. Oxycodone stimulates normal and malignant hematopoietic progenitors via opioid-receptor-independent-β-catenin activation
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