Assertion: phenylalanine's effect | /r/AtLocation | investigation
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text: In summary, while the microstructural effect of vitamin E in polyethylene are still under investigation, the fatigue strength of vitamin E-diffused, irradiated UHMWPE was improved compared to irradiated and melted UHMWPE and it remained unchanged after accelerated aging, showing improvement compared to oxidation-prone conventional UHMWPE.