1 Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, 10-748 Olsztyn, Poland ; Department of Morphology and Function, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal.
2 Department of Morphology and Function, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal.
3 Laboratory of Reproductive Immunology, Department of Experimental Therapy, Institute of Immunology and Experimental Therapy of PAS, 53-114 Wroclaw, Poland.
4 Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, 10-748 Olsztyn, Poland.