title: Periodontal tissue changes in a recovery experiment using folic acid-deficient rats.
mesh_terms: D000818:Animals; D005494:Folic Acid Deficiency / Q000473:pathology / Q000503:physiopathology*; D005881:Gingiva / Q000033:anatomy & histology / Q000187:drug effects; D002955:Leucovorin / Q000494:pharmacology*; D008297:Male; D008727:Methotrexate / Q000494:pharmacology*; D010519:Periodontium / Q000033:anatomy & histology / Q000187:drug effects*; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D002955:Leucovorin; D008727:Methotrexate