Amino acid changes linked to pyrimethamine resistance in the dihydrofolate reductase-thymidylate synthase gene of Plasmodium falciparum.
Proc Natl Acad Sci U S A. 1988 Dec;85(23):9109-13. doi: 10.1073/pnas.85.23.9109.
Proc Natl Acad Sci U S A. 1988.
PMID: 3057499
Free PMC article.