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World J Stem Cells. Sep 26, 2025; 17(9): 108049
Published online Sep 26, 2025. doi: 10.4252/wjsc.v17.i9.108049
Table 1 Safety evaluation of umbilical cord-derived mesenchymal stem cell-conditioned medium
Toxicity
Test
Target
Result
Toxicity for skinSkin irritation testRabbitPass
Eye irritation testRabbitPass
Skin sensitization testGuinea pigPass
Photosensitization testGuinea pigPass
Phototoxicity testGuinea pigPass
Single dose toxicityRatPass
Repeated dose toxicityRatPass
GenotoxicityMicronucleus testMousePass
Bacterial reverse mutation testEscherichia coli (WP2 uvrA), Salmonella typhimurium (TA98, TA100, TA1535, and TA1537)Pass
Chromosomal abnormality testChinese hamster lung cellPass