Light and electron microscopic studies on the endocrine cells in the duck proventriculus.

@article{Okamoto1981LightAE,
  title={Light and electron microscopic studies on the endocrine cells in the duck proventriculus.},
  author={Toru Okamoto and Junzo Yamada},
  journal={Nihon juigaku zasshi. The Japanese journal of veterinary science},
  year={1981},
  volume={43 6},
  pages={863-70}
}