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Technically, mushrooms contain all nine essential amino acids, but they are typically limiting in sulfur-containing amino acids like methionine

Exogenous oxidants highly induced the expression of LtGPX3 , and the Ltgpx3 mutants displayed increased sensitivity to ROS-generating oxidants

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Side Effects & Safety No lethal dose found -- toxicology studies couldn't establish an LD50 (Sikiric et al., 2006) No organ toxicity in chronic dosing No hormonal effects -- doesn't affect testosterone, estrogen, cortisol, or GH Mild nausea -- mostly with oral dosing Brief lightheadedness -- occasionally after injection Injection site redness -- standard for SC peptides Angiogenesis concern -- promotes new blood vessel growth, which raises a theoretical question about existing tumors