TY - JOUR AU - Sluka, K A; Deacon, M; Stibal, A; Strissel, S; Terpstra, A TI - Spinal blockade of opioid receptors prevents the analgesia produced by TENS in arthritic rats JO - J Pharmacol Exp Ther IS - 2 VL - 289 PY - 1999 SP - 840 EP - 846 ER -