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Table 3 Corrosion of STS316 after EA application in tissue and TUNEL assay results (NPN: Number of pixels with tissue necrosis, NPT: Number of pixels with total tissue)

From: Biological safety of Electroacupuncture with STS316 needles

  0.18 mm 0.20 mm 0.25 mm 0.30 mm
Uncoated Needle X X X X
TUNEL +
(NPN/NPT) 35/66743 22/62854 1437/56464 28/97992
Coated Needle O O O O
TUNEL ± +
(NPN/NPT) 56/54079 1196/86717 62/65122 1381/67015
  1. (X No corrosion, O Corrosion, TUNEL negative, +: TUNEL positive, ±: suspected TUNEL positive)