Fig. 1
From: Behavioral and cognitive animal models in headache research
Representative pictures of spontaneous grimace induced in free-moving CD1 mice after peripheral CGRP. a Facial features observed at baseline, (b) facial features observed 30 min after peripheral administration of saline (PBS), (c and d) facial features observed 30 min after peripheral administration of CGRP (0.1 mg/kg, i.p)