Some foods rich in sulfur amino acids are cruciferous vegetables, turkey, beef, chicken, nuts, legumes, allium vegetables like garlic, onions, leeks, and shallots, and leafy greens
Excess DTT and imidazole were removed on a PD-10 desalting column (Merck), and the reduced proteins were eluted with 3.5 mL ice-cold assay buffer containing 100 mM Tris/HCl, 1 mM EDTA, pH 8.0
Finally found this
Probably because the clinical trial grew directly out of Shungus successful NIH-funded ME/CFS research effort
How glutathione and NAD+ work together Though glutathione and NAD+ act in different pathways, those pathways constantly interact