“…and an equivalent amount of normal saline (10 mL/kg), respectively 1 h before the formalin injection. The time spent on licking the injected paw by each rat was observed as soon (early phase 0-5 min, postinjection) as the formalin was injected and later (late phase [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] min, post injection). The mean of the time spent on licking injected paw in each group was determined [10] .…”