An ultrastructural study of oogenesis and cell dynamics during cocoon shell secretion in the subterranean freshwater planarian Dendrocoelum constrictum (Platyhelminthes, Tricladida).

@article{Harrath2013AnUS,
  title={An ultrastructural study of oogenesis and cell dynamics during cocoon shell secretion in the subterranean freshwater planarian Dendrocoelum constrictum (Platyhelminthes, Tricladida).},
  author={Abdul Halim Harrath and Mukhtar A. Mohammed Ahmed and Shaban Rushdy Mohamed Sayed and Mohd Aslam Saifi and Saleh Hamad Alwasel},
  journal={Tissue & cell},
  year={2013},
  volume={45 1},
  pages={39-46}
}
The ultrastructure of the ovary and the female atrium during cocoon formation was investigated in the subterranean freshwater planarian Dendrocoelum constrictum. In the peripheral portion of the ovary, the oogonia are recognized as undifferentiated germ cells, which are morphologically similar to neoblasts that have a high nucleus/cytoplasm ratio. Oocyte maturation is characterized by a marked growth of the cytoplasm because of the accumulation of cytoplasmic organelles and inclusions. The… CONTINUE READING
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