1. Department of Histology and Embryology; Nicolaus Copernicus University in Torun Collegium Medicum in Bydgoszcz; Karlowicza 24 85-092 Bydgoszcz Poland
2. Plant Breeding and Acclimatization Institute - National Research Institute Radzikow Research Division in Bydgoszcz; Department of Genetics and Breeding of Root Crops Laboratory of Biotechnology; Powstancow Wielkopolskich 10 85-090 Bydgoszcz Poland
3. Department of Immunology; Nicolaus Copernicus University in Torun Collegium Medicum in Bydgoszcz; Sklodowskiej-Curie 9 85-094 Bydgoszcz Poland
4. Students’ Scientific Society Department of Histology and Embryology; Nicolaus Copernicus University in Torun Collegium Medicum in Bydgoszcz ; Karlowicza 24 85-092 Bydgoszcz Poland