Transsulfuration
Methylenetetrahydrofolate reductase
Hyperhomocysteinemia
Cystathionine beta synthase
Homocysteine
Epigenetics
B vitamins
Methylcobalamin
Vitamin B12
Methylation
Methionine
Methyltransferase
DNA methylation
Endocrinology
Internal medicine
Biology
Genetics
Medicine
Allele
Gene
Gene expression
Amino acid