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Table 1 Groups of formalin test

From: Standardizing therapeutic parameters of acupuncture for pain suppression in rats: preliminary study

Parameter Groups
Acupoint and temporal point of needling Right after formalin injection ST36
  5 min after formalin injection ST36
Rotating of needle Rotation Non-rotation
Duration of needling Duration 0.5 Duration 1 Duration 3
Diameter of needle 0.17 mm 0.40 mm
  1. Control group of each parameter was not included in this table.