Marek disease
a lymphoproliferative disease of chickens, formerly included in the avian leukosis complex but now known to be caused by either of two viruses known as gallid herpesviruses 2 and 3. Lymphoid cell infiltrations are usually in the peripheral nerves and gonads but may also be found in visceral organs, skin, muscle, and the iris; there may be perivascular cuffing of blood vessels in the central nervous system. Where lesions are dictates the clinical signs, such as paralysis or blindness. When there are mainly neurological symptoms, it is called fowl or range paralysis or neural lymphomatosis. When there are mainly ocular symptoms, it is called ocular lymphomatosis, and with mainly skin symptoms it is called skin leukosis.

Medical dictionary. 2011.

Look at other dictionaries:

  • Marek disease — Ma·rek disease (mahґrek) [Josef Marek, Hungarian veterinarian, 1867–1952] see under disease …   Medical dictionary

  • Marek disease virus — Marek disease virus. См. вирус болезни Марека. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Marek-Disease-ähnliche Viren — Mardivirus Systematik Reich: Viren Ordnung: nicht klassifiziert Familie: Herpesviridae Unterfamilien: Alphaherpesvirinae …   Deutsch Wikipedia

  • Marek disease vaccine — a modified live virus vaccine of tissue culture origin, used for immunization of 1 day old chicks against Marek disease, prepared from one or more of the three serovars of Marek disease virus …   Medical dictionary

  • Marek disease virus — either of two herpesviruses that cause Marek disease in chickens; see gallid herpesvirus 2 and gallid herpesvirus 3, under herpesvirus …   Medical dictionary

  • Marek disease herpesvirus 1 — gallid h. 2 …   Medical dictionary

  • Marek disease herpesvirus 2 — gallid h. 3 …   Medical dictionary

  • Marek's disease — Virus classification Group: Group I (dsDNA) Family: Herpesviridae Genus: Mard …   Wikipedia

  • Marek's disease — /mar iks, mahr /, Vet. Pathol. a contagious cancerous disease of poultry, caused by a herpesvirus and characterized by proliferation of lymphoid cells and paralysis of a limb or the neck. Also called fowl paralysis, range paralysis. [after… …   Universalium

  • Marek's disease — Mar·ek s disease mar iks , mer n a highly contagious virus disease of poultry that is characterized esp. by proliferation of lymphoid cells and is caused by either of two herpesviruses (Gallid herpesvirus 2 and Gallid herpesvirus 3) Mar·ek mȯ… …   Medical dictionary

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