Fig. 6
From: Biological safety of Electroacupuncture with STS316 needles
Cytotoxicity of EA byproducts in NCTC cells. a: Needles used in the cytotoxicity experiments. Corrosion was not observed in non-coated 0.25-mm STS316 needles but was found in coated 0.2- and 0.3-mm STS316 needles. b: MTT assay in NCTC cells. Although the difference was not statistically significant, approximately 10% cytotoxicity was observed 100% media that had been subjected to electrical stimulation with the needle was applied to the cells