TY  - BOOK
AU  - Cheung,H.T.A.
AU  - Birdsall,B.
AU  - Chau,D.D.
AU  - Feeney,J.
AU  - Frenkiel,T.A.
TI  - 13C NMR determination of the tautomeric and ionization states of folate in its complexes with Lactobacillus casei dihydrofolate reductase
ER  -