when ultrastructurally examining 24 germinomas comprising 12 seminomas , 4 dysgerminomas , 1 mediastinal germinoma , and 7 intracranial germinomas , intranuclear membranous profiles were noticed in 17 germinomas , ranging from 20-100 nm in width and 3 microns in length .
C0013377
dysgerminomas
C0206660
germinomas