Divergencia de coloración en las subespecies del Pato Colorado (Anas cyanoptera) de Norteamérica y Sudamérica.

BACKGROUND For detection of anti-nuclear antibodies (ANAs) and antibodies to extractable nuclear antigens (ENAs), samples frequently are screened with indirect immunofluorescence (IIF); further determination of anti-ENA antibodies is performed only when the result is positive. However, because anti-ENA reactivities are found in samples with low fluorescence intensities, we determined anti-ENA a...

We investigated the presence of serum antinuclear antibodies (ANAs) and autoantibodies and their relationship with serum prognostic indicators in lymphoma patients. The study population comprised 127 patients diagnosed with lymphoma and 138 healthy control subjects. The blood samples of the participants were assayed for ANAs by immunofluorescence, and autoantibodies were detected by western blo...

Wild populations of the world's most common dabbling duck, the mallard (Anas platyrhynchos), run the risk of genetic introgression by farmed conspecifics released for hunting purposes. We tested whether bill morphology of free-living birds has changed since large-scale releases of farmed mallards started. Three groups of mallards from Sweden, Norway and Finland were compared: historical wild (b...

There have been many recent reports across Europe and North America of a change in the timing of arrival and departure of a range of migrant bird species to their breeding grounds. These studies have focused primarily on passerine birds and climate warming has been found to be one of the main drivers of earlier arrival and departure in spring. In Ireland, rising spring temperature has been show...

Systemic lupus erythematosus is a systemic autoimmune disease characterized by the production of antinuclear antibodies (ANAs). Recent research into human and murine lupus suggests that disease susceptibility results from genetic polymorphisms regulating immune responses as well as impairing the clearance of apoptotic cells. Because the products of dead cells, including nucleic acids, have immu...

The ID Screen Influenza H5 Antibody Competition enzyme-linked immunosorbent assay was tested for the detection of antibodies to the H5 subtype of influenza A (IA) virus in waterfowl. Assays were conducted with sera obtained from Mallards (Anas platyrhynchos) and Pekin Ducks (Anas platyrhynchos domestica), experimentally infected with eight low pathogenic (LP) and nine highly pathogenic (HP) H5N...

Melanomas are malignant neoplasms originating from melanocytes. They reported in birds.  In this  case, macroscopic and microscopic (the histopathologic and IHC) findings supported a final diagnosis  of cutaneous malignant melanoma in a mallard duck (Anas platyrhynchos). A female mallard duck  (Anas platyrhynchos) was observed with a mass on the ventral portion of the neck. Th...

rates of gar-ganey (Anas querquedula) staging in the Camargue, southern France, during spring migration. North American ducks and gulls to H5N1 highly pathogenic avian infl uenza viruses.ment of multiple sublineages of H5N1 infl uenza virus in Asia: Implications for pandemic control. To the Editor: Malaria remains a major public health problem and a primary cause of illness in Madagas-car (1). ...