19:12

BH4 vs tyrosine for low neurotransmitters and a high phenylalanine-to-tyrosine ratio.

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Exploring Methylation, Biopterin, Folate & Transsulfuration: A Nutritional Genomics Approach

17:14

Phenylalanine/Tyrosine Metabolism and Disorders - CRASH! Medical Review Series

1:58:32

The Power of Methylation with Dr. Bridget Briggs, MD

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DNA animation (2002-2014) by Drew Berry and Etsuko Uno wehi.tv #ScienceArt

21:44

What cofactors are needed to synthesize and recycle BH4?

58:14

[Mentorship Miniseries] Beyond MTHFR: Is folate is the key to methylation? Think again.

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Phenylalanine Hydroxylase