The order Anguilliformes comprises 15 families, 141 genera and 791 fish species. Eight families had at least one karyotyped species, with a prevalence of 2n = 38 chromosomes and high fundamental numbers (FN). The only exception to this pattern is the family Muraenidae, in which the eight species analyzed presented 2n = 42 chromosomes. Despite of the large number of Anguilliformes species, karyo...

The cytogenetical effects of long-term irradiation in embryo tissue of gastropod snail (Lymnaea stagnalis L.) as chromosome aberration rate as well as change of structure, level of differentiation, death and cytogenetical stability of hemolymph cell population has been studied. Our researches were carried out during 1998–2007 in water bodies within the Chernobyl Exclusion. The absorbed dose rat...

Extraskeletal myxoid chondrosarcoma (EMC) is an uncommon but distinct entity with clearly different clinicopathological, immunohistochemical, cytogenetical and histogenetical features from conventional skeletal chondrosarcoma. Because of its better prognosis in comparison to conventional skeletal chondrosarcoma, the right diagnosis is essential. A case of EMC occuring in the external auditory m...

Malignant gliomas and specially glioblastoma multiforme are the most frequent and devastating brain tumors in adults. Intensive molecular and cytogenetical studies have revealed a wide variety of deregulated genes implicated in cell cycles, DNA repair, apoptosis, cell migration, invasion and angiogenesis with little translational success. An increasing number of reports investigating epigenetic...