| intracisternal | Within one of the subarachnoid cisternae; usually refers to the introduction of a cannula into the cerebellomedullary cistern for aspiration of cerebrospinal fluid or the injection of air into the ventricles of the brain. (05 Mar 2000) |
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| genes, intracisternal a-particle | A family of retrovirus-like genetic elements coding for virus-like particles found regularly in early rodent embryos (2-cell to blastocyst stage), but which, under certain circumstances such as DNA hypomethylation, are transcribed in a wide variety of neoplasms, including plasmacytomas, neuroblastomas, rhabdomyosarcomas, teratocarcinomas, and colon carcinomas. (12 Dec 1998) |
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