Human Dirofilaria repens Infection in Romania: A Case Report
Histological sections of the parasite. Sections were stained using hematoxylin-eosin (HE) (a), Masson’s trichrome stain (b, c), Giemsa (d, e), and periodic acid-Schiff reaction and immunohistochemistry for IgE (f). Typical features of D. repens are the external longitudinal ridges, the thick cuticula, and the well-developed musculature (a, b, c). Around the parasite a marked inflammatory reaction with numerous eosinophils, neutrophils, lymphocytes, plasma cells, and macrophages is seen (d, e). Many IgE-positive plasma cells are present in the infiltration and near to the surface of the parasite (f).