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One protein accounts for gamma-glutamylcysteine synthetase and glutathione synthetase activities

Quantitative RT-PCR RNA isolation from human ESC and NPC cultures was done with the Aurum kit (Bio-Rad)

*Correspondence: Jianhua Zhang, [email protected] Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers

They serve different but complementary roles in the body, and some research suggests that astaxanthin may even help maintain higher levels of glutathione in your system

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