Authors
Michał Niezgoda
Department of Histology and Cytophysiology, Medical University of Białystok, Białystok, Poland
Irena Kasacka
Department of Histology and Cytophysiology, Medical University of Białystok, Białystok, Poland
© 2019 Michał Niezgoda, Irena Kasacka, published by Institute of Mother and Child
This work is licensed under the Creative Commons Attribution 4.0 License.