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The observed threshold effect at 358.7 pg/mL (OR = 1.04 per 10 pg/mL, 95% CI: 1.001.08, P = 0.03) suggests a plateau in B12 benefit beyond this level, likely due to saturation of methionine synthase activitya mechanism consistent with non-linear enzymatic dose-response relationships, where additional B12 may not enhance methylation capacity [21]
[480] She announced her third pregnancy the day after
The specific concentration, exposure time, and experimental protocols are determined by the researcher based on the study design, existing literature, and institutional guidelines
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