5[1]Calvert H. An overview of folate metabolism: Features relevant to the action and toxicities of antifolate anticancer agents. Semin Oncol, 1999, 26 (2 Suppl 6) :3
6[2]Sierra EE, Goldman ID. Recent advances in the understanding of the mechanism of membrane transport of folates and antifolates.Semin Oncol. 1999, 26 (2 Suppl 6): 11
7[3]Mendelsohn LG, Shih C, Chen VJ, et al. Enzyme inhibition,polyglutamation, and the effect of LY231514 (MTA) on purine biosynthesis. Semin Oncol, 1999, 26 (2 Suppl 6):42
8[4]Calvert H. MTA, a novel multitargeted antifolate, from preclinical to phase Ⅰ and beyond: Summary and conclusions. Semin Oncol, 1999, 26 (2 Suppl 6): 105
9[5]Schultz RM, Chen VJ, Bewley JR, et al. Biological activity of the multitargeted antifolate, MTA (LY231514), in human cell lines with different resistance mechanisms to antifolate drugs. Semin Oncol, 1999, 26 (2 Suppl 6) :68
10[6]Calvert AH, Walling JM. Clinical studies with MTA. Br J Cancer, 1998, 78 (Suppl 3) :35
