Development of the uterine shell glands during the preovulatory and early gestation periods in oviparous and viviparous Lacerta vivipara.

@article{Heulin2005DevelopmentOT,
  title={Development of the uterine shell glands during the preovulatory and early gestation periods in oviparous and viviparous Lacerta vivipara.},
  author={Beno{\^i}t Heulin and James R Stewart and Yann Surget-Groba and Patricia Bellaud and Florence Jouan and G{\'e}rard Lancien and Jean Deunff},
  journal={Journal of morphology},
  year={2005},
  volume={266 1},
  pages={80-93}
}
The evolutionary process leading to the emergence of viviparity in Squamata consists of lengthening the period of egg retention in utero coupled with marked reduction in the thickness of the eggshell. We used light microscopy and scanning electron microscopy to study uterine structure during the reproductive cycle of oviparous and viviparous females of the reproductively bimodal Lacerta vivipara. We compared the structure of the uterine shell glands, which secrete components of the eggshell… CONTINUE READING

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