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this step eliminated external contaminants (blood, etc.)

Solubility: It is the preferred solvent for dissolving peptide structures, as it maintains the correct pH balance to prevent peptide degradation (denaturing) during the reconstitution process

Recommended Containers Avoid: Standard polypropylene tubes without protein low-bind treatment (significant adsorption at ng/mL concentrations) Polystyrene containers (higher adsorption than polypropylene) Standard glass without silanization At concentrations of 10100 ng/mL, even modest adsorption to tube walls can meaningfully reduce the effective concentration and introduce variability between experiments

prausnitzii in feces, suggesting its potential regulatory role in intestinal immunity 81

GriffinGHewisonMHopkinJKennyRQuintonRRhodesJet alPerspective: vitamin D supplementation prevents rickets and acute respiratory infections when given as daily maintenance but not as intermittent bolus: implications for COVID-19

doi: 10.1038/s41598-022-20658-x 277 TuCTaoFQinYWuMChengJXieMet al