Detected trematodes inside blue-winged teals (Spatula discors) give insights on north-south flow of parasites through Cuba during migration.

The Blue-winged Teal (Spatula discors) is known for engaging in long-distance North-South migrations and back in the Americas with Cuba being an important wintering ground. Teals serve as hosts for a wide range of parasite species that can be "discharged" at each end of the migration route. Here, we explore for the first time the diversity of trematodes that the Blue-winged Teal may be introducing to -or exporting from- Cuba.

[Glomerular deposition disease, regarding a case of fibrillary glomerulonephritis].

In routine diagnosis for renal biopsy, glomerular diseases are encountered that, viewed by electron microscopy, reveal deposits with a fibrillary structure in the extracellular matrix of the glomeruli. Amyloidosis is the most common glomerulopathy that shows deposits with an ultrastructural fibrillary structure. However, other glomerulopathies have deposits with an ultrastructural fibrillary structure and which are negative for Congo-red stain, but positive for immunoglobulins.

[Non-amyloidotic glomerular disease caused by light-chain deposits: a case report].

The nephropathy of monoclonal gammopathies is principally caused by light chain deposits of fragmented immunoglobins. Paraprotein-related renal diseases are associated with such deposits of intact (heavy chain) or fragmentary (light chain) immunoglobins. A condition of pathological light chain deposits is rare and characterized by deposits of fragments of monoclonal immunoglobulins in many organs.