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doi: 10.1038/nrgastro.2017.75 58 HamedS

Contrary to Zen's claims, in 2018 the company obtained a compliance certificate from Amfori, a business association for open and sustainable trade based in Brussels, Belgium

Despite these higher numbers aged macrophages are less active, with altered expression and function of TLRs [148], decreased cytokine and growth factor production [149] and reduced phagocytic activity compared to macrophages from younger counterparts [150]

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