Assertion: titanium dioxide's effect | /r/CapableOf | observe in hairless mouse
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Source sentences:
text: A few studies that reported findings suggesting that TiO 2 NPs could penetrate beyond the stratum corneum suffered from important methodological limitations that put the validity and extrapolation of these findings to humans in doubt (Tan et al., 1996, effect not statistically significant; Wu et al., 2009, effect observed in hairless mouse only; Sadrieh et al., 2010, tissue contamination likely).