1. D. Ciecierska:
Laboratory of Molecular Cytogenetics, West Pomeranian University of Technology, Szczecin, Poland
2. A. Frost:
Laboratory of Molecular Cytogenetics, West Pomeranian University of Technology, Szczecin, Poland
3. W. Grzesiak:
Laboratory of Biostatistics, West Pomeranian University of Technology, Szczecin, Poland
4. W. S. Proskura:
Laboratory of Molecular Cytogenetics, West Pomeranian University of Technology, Szczecin, Poland
5. A. Dybus:
Laboratory of Molecular Cytogenetics, West Pomeranian University of Technology, Szczecin, Poland
6. A. Olszewski:
Experimental Station in Kolbacz Ltd, National Research Institute of Animal Production, Kolbacz, Poland