[Neuroleukemia in mice with leukemia L1210 treated with methotrexate]

Histological investigations were conducted in 33 methotrexate-treated mice with leukemia L1210. It has been found that in nonsuppressed systemic leukemia process the development and progressing of initial morphologic signs of neuroleukemia takes place as a result of perivascular growth of leukemic infiltrates from the bone marrow of the cranial and vertebral bones into the adjacent structures of the central nervous system.