Abstract
Thirteen gliomas from 55 neurosurgical specimens, derived from 25 adults and 30 children, have been successfully grown as subcutaneous xenografts in immune-deprived or nude mice. Only 2 of the 30 paediatric specimens implanted (6.7%), a medulloblastoma and an astrocytoma Grade III, have grown compared with 11 of the 25 adult specimen (44%) which were mostly astrocytomas Grade III. Tumour growth usually occurred several months after implantation, and karyotypic analysis confirmed their human origin in all cases. The histopathology of xenografted tumours correlated with the original surgical material, both after initial implantation and when tumours had been passaged several times. Observations on tumour growth in various types of immune-deprived mice indicated that, within certain limits, the immunological competence of the host mouse did not relate to take rates of primary implants, but could affect the take rate of passaged tumours.
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