## 3 Results  
Textural parameters of the synthesized activated carbon were determined using nitrogen adsorption at cryogenic temperatures. As observed in Figure 1, the synthesized sample had a widely developed porous structure with a significant proportion of micropores (above 500 cm\({}^{3}\)/g) and small mesopores (pore size distribution is reported in Figure 1b). Total pore volume achieved at \(\mathrm{p}/\mathrm{p}_{0}\approx 0.98\) was larger than 2250 cm\({}^{3}\) STP/g (STP-standard pressure and temperatures conditions). This extremely large volume anticipates the exceptional properties of the synthesized sample. The apparent surface area after application of the BET equation was as large as 2700 m\({}^{2}\)/g. Micropore volume was only 0.88 cm\({}^{3}\)/g, while the total volume at \(\mathrm{p}/\mathrm{p}_{0}=0.98\) was around 3.55 cm\({}^{3}\)/g. AC had a widely developed porous structure with three main contributions in the narrow micropores (0.8 nm), wide micropores and narrow mesopores (3.4 nm and 4.0 nm) range. Irradiated and healthy control rats were weighed every 2-3 days. As shown in Figure 2, both groups of irradiated animals exhibited severe and rapid body weight loss until 3 days post-irradiation, due to acute radiation syndrome. The body weight loss was less pronounced in the AC treated group. This was followed by a recovery phase for both groups of irradiated rats. Spleens and thymus of both 6 Gy-irradiated and healthy control groups of rats were weighed on days 1 and 9 post-irradiation. Figure 3 shows that average spleen and thymus weights were strongly decreased on the 1 st day after irradiation for both untreated and AC treated rats, when compared to healthy control. Average thymus weights of both irradiated groups were not significantly different from healthy control on the 9 th day after irradiation. Therefore no significant  
Figure 1: (**a**). N\({}_{2}\) adsorption (full symbol) and desorption (empty symbol) isotherms at \(-\)196 \({}^{\circ}\)C\({}_{i}\) (**b**). Pore size distribution obtained after application of the QSDFT method. Figure 2: Gain of total body weight by groups of rats, g (delta of weight values in day post and before Irradiation). * \(p\) < 0.05 in comparison with h.control; \(\
eq p\) < 0.05 in comparison with Ir.control. differences (except a possible positive tendency of a weight increase in AC treated group) in thymus and spleen recovery were found between Ir control and AC treated groups of rats. The spleen weight of Ir.control and Ir+Ac groups on the 9 th day after irradiation was slightly augmented, but less than those in healthy control group. Blood cell count (Figure 4) in animals 24 h after irradiation reveals typical shut down of WBC and lymphocyte levels at 10-12 times less in both irradiated groups versus healthy control. No marked changes in platelet levels were observed in this period after irradiation. Figure 3: Weight of spleen and thymus of rats on the 1 st and the 9 th post-irradiation day. * \(p\) < 0.05 in comparison with h.control. On the first day after radiation exposure in both groups bone marrow cells count (10\({}^{6}\) per femur) was 2.4-2.7 times less (38.2 \(\pm\) 9.4; 35.4 \(\pm\) 12.0) than in healthy controls (88 \(\pm\) 14.7). Statistical differences were not found between AC treated and untreated irradiated group during counts (10\({}^{6}\) per femur) of all bone marrow cells and composites: differentiating granulocytes, mature granulocytes, erythroid cells, lymphocytes (Figure 5). But the results of cultivation of these bone marrow cells, taken 24 h after animals' irradiation, demonstrate the statistical difference in the efficiency of colony formation, namely, 6 \(\pm\) 0.8 colonies and 5 \(\pm\) 1.1 clusters per 1 \(\times\) 10\({}^{5}\) explanted cells in irradiated control group and 9 \(\pm\) 1.3 colonies and 20 \(\pm\) 2.4 clusters per 1 \(\times\) 10\({}^{5}\) explanted cells in animals treated with AC before and after irradiation.