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Photograph of pectoral muscle from a Northern Pintail Duck

Detailed Description

Photograph from a Northern Pintail Duck (Anas acuta) found dead in Arizona, US.  (A) The pectoral muscle contains numerous sarcocysts (arrowheads) of Sarcocystis sp. that are grossly visible as tan rice grain-like structures.  An area of hemorrhage (*) is also shown.


Public Domain.