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Ultrastructure of the haemocytes of Ixodes scapularis (Acari: Ixodidae)

June 16, 2010

Haemocytes of Ixodes scapularis were characterized on the basis of their ultrastructure by transmission electron microscopy of thin sections. Three types of haemocytes were identified: prohaemocytes, plasmatocytes, and granulocytes. Prohaemocytes are undifferentiated cells containing very little cytoplasm (high nucelo-cytoplasmic ratio). Plasmatocytes are rich in free ribosomes, mitochondria, rough endoplasmic reticulum, and have numerous peripheral vacuoles. Granulocytes are polymorphic cells containing granular inclusions and filopodia on the surface. Granulocytes are divided into two morphological types, type I and II, based on the structure of the granules.

Citation Information

Publication Year 1996
Title Ultrastructure of the haemocytes of Ixodes scapularis (Acari: Ixodidae)
Authors E. Zhioua, R.A. LeBrun, P.W. Johnson, H. S. Ginsberg
Publication Type Article
Publication Subtype Journal Article
Series Title Acarologia
Series Number
Index ID 5223289
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center