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Multiple Choice

Which endometritis is associated with Contagious Equine Metritis?

Contagious Equine Metritis tends to produce a chronic endometritis in mares, and the inflammatory tissue response is dominated by plasma cells. This plasmacytic endometritis reflects a long-standing, humoral immune reaction to the persistent infection caused by Taylorella equigenitalis. Plasma cells are antibody-producing cells, so their prominence indicates ongoing antigen exposure rather than an acute neutrophil-driven attack. In contrast, a suppurative or neutrophilic endometritis would indicate an acute, pus-forming infection with neutrophils, while a lymphocytic endometritis would be dominated by lymphocytes rather than plasma cells. These patterns are less characteristic of Contagious Equine Metritis.

Contagious Equine Metritis tends to produce a chronic endometritis in mares, and the inflammatory tissue response is dominated by plasma cells. This plasmacytic endometritis reflects a long-standing, humoral immune reaction to the persistent infection caused by Taylorella equigenitalis. Plasma cells are antibody-producing cells, so their prominence indicates ongoing antigen exposure rather than an acute neutrophil-driven attack.

In contrast, a suppurative or neutrophilic endometritis would indicate an acute, pus-forming infection with neutrophils, while a lymphocytic endometritis would be dominated by lymphocytes rather than plasma cells. These patterns are less characteristic of Contagious Equine Metritis.