APA (7th ed.) Citation

Upregulation of kappa opioid receptor system and its association with relapse to morphine/methamphetamine (poly-drug) addiction.

Chicago Style (17th ed.) Citation

Upregulation of Kappa Opioid Receptor System and Its Association with Relapse to Morphine/methamphetamine (poly-drug) Addiction.

MLA (9th ed.) Citation

Upregulation of Kappa Opioid Receptor System and Its Association with Relapse to Morphine/methamphetamine (poly-drug) Addiction.

Warning: These citations may not always be 100% accurate.