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Brain tissue : May support neuronal regeneration, offering neuroprotective effects
As with any active, patch testing on a small area before full-face use is prudent, and anyone with very reactive skin or a known copper sensitivity should be cautious
Resting the injected limb for several minutes after administration allows blood vessels to contract and reduces oozing
As of 2026, the paper has not been formally retracted, but the Expression of Concern remains in force
10.1007/s11427-023-2532-5 27 LiL.ZhaoY.DingY.GuoL.DaiR.ChenA.et al (2025)
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