Figure 2
From: Peripheral muscarinic receptors mediate the anti-inflammatory effects of auricular acupuncture
Schematic drawings showing the time lines for each experimental protocol. Please note that time indicators are not drawn to scale. In Protocol 2, intraperitoneal injection of receptor antagonists (NX, naloxone; AT, atropine) or the vehicle normal saline (NS) was made 10 minutes before auricular acupuncture (AA) and 20 minutes after AA. In Protocol 3, intraplantar injection of AT/NS was made following CA injection, just before AA.