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…one-carbon metabolism, including the pathway that processes homocysteine. Topics: low testosterone, pituitary, testicular injury, hypothyroidism, malnutrition, zinc, magnesium, B12, folate, selenium, vitamin D, CoQ10

Books & reading guidesFrom the archive

…at helps produce a form of folate used in the processing of homocysteine. Common variants are different from rare variants that cause severe MTHFR deficiency. Topics: ulcerative colitis, Crohn’s disease, IBD, MTHFR, glutathione, probiotics…

Nutrient referenceSep 23, 2026
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Contributes to cell membranes, acetylcholine and transport of fats from the liver.

Gene referenceSep 17, 2026
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Encodes cubilin, part of a receptor system involved in uptake of the intrinsic-factor–B12 complex.

Gene referenceSep 17, 2026
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FOLR3 is the gene name for Folate Receptor 3. Learn what a specific result could mean and what to ask about it.

Report teachingSep 16, 2026
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Explore enteric nerve development, aganglionosis, bowel function, RET, EDNRB, EDN3, SOX10, PHOX2B, and genetic syndromes discussed alongside Hirschsprung’s disease.

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