δ-opioid receptors are primarily sensitive to opioids and enkephalins. δ-opioid receptors are not classic cannabinoid receptors but their activity is modulated by cannabinoids. Since cannabinoids have a physiological effect on δ-opioid receptors they are effectively cannabinoid receptors.

Cav3.2 is a calcium channel of the T-type that is involved in many processes in the brain and other tissues. Contrary to other calcium channels Cav3.2 is activated by relatively low/negative voltages.