1. Diet and asthma: vitamins and methyl donors
Yueh-Ying Han, PhD, Josh Blatter, MD, John M Brehm, MD, Erick Forno, MD, Augusto A Litonjua, MD, Prof Juan C Celedón, MD 
The Lancet Respiratory Medicine 
Volume 1, Issue 10, Pages (December 2013)
DOI: /S (13)
Copyright © 2013 Elsevier Ltd Terms and Conditions

2. Figure
Potential mechanisms of action of methyl donors and vitamins (A, C, E, and D) on Th1 and Th2 immune responses
BHMT=betaine-homocysteine methyl-transferase. RORγt=retinoic acid-related orphan receptor γt. GATA-3=GATA binding protein 3. T-bet=T-box transcription factor. FOXP3=forkhead box P3. STAT=signal transducer and activator of transcription. TGF=transforming growth factor. MTHFR=methylenetetrahydrofolate reductase. Th=T helper cells. Treg=regulatory T cells.
The Lancet Respiratory Medicine 2013 1, DOI: ( /S (13) )
Copyright © 2013 Elsevier Ltd Terms and Conditions