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Description
Guo W, Cao H, Shen Y, Li W, Wang W, Cheng L, Cai M, Xu F

Alterations in tryptophan metabolism affect vascular functions: connected to ageing population vulnerability to COVID-19 infection

Swerdlow, R

It takes four half-lives for concentrations to drop from an effect of 80% to 20% of E max 15% of the effect is lost every half-life over this concentration range
