Table 2. Duration of Blockade of the (1) Hopping Response (HR), (2) Toe Placing Response (TPR), and the Withdrawal Reflex to (3) the Hotplate Test (HP) and (4) Toe Pinch (TP) Resulting from Sciatic Nerve Injection of Bupivacaine in Which Rats Were Tested on a Hotplate of Either 52 degrees or 56 degrees Celsius.*