6533b86efe1ef96bd12cc046
RESEARCH PRODUCT
Ultrastructure of differentiating hemocytes in the embryo of Oncopeltus fasciatus dallas (insecta, heteroptera).
August Dornsubject
MesodermHistologyHemocytesInsectaGolgi ApparatusVacuoleBiologyEndoplasmic ReticulumPathology and Forensic Medicinesymbols.namesakePhagocytosismedicineAnimalsInclusion BodiesBlood CellsEndoplasmic reticulumVesicleEmbryogenesisCell DifferentiationCell BiologyAnatomyGolgi apparatusCell biologymedicine.anatomical_structureCytoplasmLarvaVacuolessymbolsUltrastructureRibosomesGlycogendescription
The hemocytes of Oncopeltus differentiate rather early during embryogenesis. They are segregated by the mesoderm soon after its formation (about 50h after egg deposition). Newly segregated hemocytes show the “typical” features of “embryonic” cells: many free ribosomes, a few strands of rough ER, the cisternae of which are considerably distended, electron lucent vacuoles around the periphery, and glycogen deposits. A few hours thereafter the hemocytes undergo striking subcellular changes. First, glycogen, electron lucent vacuoles and rough ER disappear and phagocytotic activity can be observed. Golgi complexes become well expressed and give rise to electron dense vesicles which fuse to larger bodies. Then, rough ER develops again and occupies large areas of the cytoplasm. Its cisternae are often considerably distended by proteinaceous secretions. All hemocytes undergo the same steps of differentiation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1978-03-13 | Cell and tissue research |