Table 2.

Characteristics of examined animal groups.

Animal Group	Characteristics
N	Naive, normal rats (without implantation)
M	Implantation of 5 μL of Dulbecco’s Modified Eagle Medium (DMEM) used for preparation of cell suspensions
Pa	Implantation of human GBM cells extracted from a patient, suspended in 5 μL of DMEM, 50,000 cells/µl
T	Implantation of cultured human GBM cell line T98g, suspended in 5 μL of DMEM, 50,000 cells/µl
U	Implantation of cultured human GBM cell line U87mg, suspended in 5 μL of DMEM, 5000 cells/µl