Ultrastructure of oogenesis in the brushtail possum.

  title={Ultrastructure of oogenesis in the brushtail possum.},
  author={Stephen R. Frankenberg and Lynne Selwood},
  journal={Molecular reproduction and development},
  volume={58 3},
Marsupial ova are slightly larger on average than those of eutherians. They have often been described as "yolky", although the nature and roles of their contents in later development are poorly understood. In the ova of all marsupial species studied, large quantities of electron-lucent vesicles are present. This study describes the ultrastructure of oogenesis in the brushtail possum, Trichosurus vulpecula. Oocytes of primordial follicles contain a variety of organelles of unknown function, some… CONTINUE READING