Cells with wall ingrowths (transfer cells) in the placenta of ferns

@article{Gunning1969CellsWW,
  title={Cells with wall ingrowths (transfer cells) in the placenta of ferns},
  author={Brian E. S. Gunning and John Pate},
  journal={Planta},
  year={1969},
  volume={87},
  pages={271-274}
}

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