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BACKGROUND Methotrexate is a proven teratogen and its use periconceptually is strongly advised against. Concerns about possible chromosomal effects in the offspring of women treated with this agent have been raised, but they have not been reported. In vivo and in vitro studies have supported this...
BACKGROUND Folate supplementation decreases the incidence of birth defects such as neural tube defects (NTDs). We and others have shown that gestational dietary folate deficiency that does not produce overt NTDs can alter fetal neural histology. Accordingly, murine offspring were examined for the...