## 3 Results  
The data in Table 1 and Figure 1 demonstrate the different hemoglobin derivative concentrations of rabbits injected with \({}^{68}\)Ga with no application of antioxidant protective treatment before irradiation. It can be observed that there was no significant change in total hemoglobin concentration after isotopic injection as compared with the control group. Different hemoglobin derivatives showed obvious effects, with all non-functional derivatives, S-Hb, Met-Hb, and Hb-CO, recording a significant increase as compared with the control group. Oxymemoglobin, a functional derivative, showed a highly significant decrease (97% to 81%). The oxidized form of hemoglobin was revealed to be the most affected derivative (increasing from 1% to 8%). The data in Table 2 and Figure 2 show the hemoglobin derivative concentrations for rabbits injected with Gallium-68 after seven days of _Angelica \begin{table}
\begin{tabular}{c c c c c} \hline  & \multicolumn{2}{c}{**Control**} & \multicolumn{2}{c}{\({}^{68}\)**Ga Injected Rabbits (G1)**} \\ \hline  & **g/dL** & **\%** & **g/dL** & **\%** \\ \hline S-Hb & 0.03 \(\pm\) 0.001 & 0.17 & 0.17 \(\pm\) 0.02 * & 0.98 \\ Met-Hb & 0.17 \(\pm\) 0.01 & 0.9 & 1.37 \(\pm\) 0.03 ** & 8.1 \\ Hb-CO & 0.27 \(\pm\) 0.02 & 1.5 & 1.67 \(\pm\) 0.19 ** & 9.9 \\ Hb-O\({}_{2}\) & 16.56 \(\pm\) 0.96 & 97.2 & 13.77 \(\pm\) 1.16 ** & 80.8 \\ Total Hb & 17.0 \(\pm\)0.70 & 100 & 16.27 \(\pm\)1.02 * & 100 \\ \hline \end{tabular}
* Significant \(p<0.05\) and ** highly significant \(p<0.01\).  
\end{table} 
Table 1: Hemoglobin derivative concentrations of rabbits injected with 2 MBq/kg Gallium-68 (G1) as compared with the control group (mean \(\pm\) SE). Figure 1: (**A**) Sulfhemoglobin, methemoglobin, and carboxyhemoglobin derivative concentrations after \({}^{68}\)Ga injection as compared to control. (**B**) Oxymemoglobin derivative concentration after \({}^{68}\)Ga injection as compared to control. * Significant \(p<0.05\) and ** highly significant \(p<0.01\). _biloba_ application as a protective antioxidant treatment before irradiation. The rabbits that received antioxidants, i.e., _A. archangelica_ or _G. biloba_, prior to Gallium-68 injection showed a significant increase in functional derivatives. The rabbits that received a combined dose of both antioxidants in the same experimental conditions, dose, time, and duration showed the greatest enhancement of oxyhemoglobin (15.35 \(\pm\) 1.24 g/dL). In addition, the non-functional hemoglobin derivative showed a significant decrease from 8% to 2% with gallium injection. The superoxide dismutase (SOD) and glutathione peroxidase (GPX) activities in the blood of rabbits injected with Gallium-68 with and without prior protection with _Angelica_ _archangelica_ and _Ginkgo biloba_ are shown in Table 3. A highly significant increase in both activities was recorded after Gallium-68 injection (467.37 \(\pm\) 21.04 and 9325.45 \(\pm\) 411.45 U/mL), respectively. An obvious enhancement in oxidative protection was found when the supplemented antioxidants were applied daily before injection, as reflected by lower enzyme activities--288.12 \(\pm\) 16.55 and 277.15 \(\pm\) 16.15 U/mL for SOD in G2 and G3, and 6346.45 \(\pm\) 522.45 and 7123.76 \(\pm\) 416.24 U/mL for GPX in G2 and G3. The combined dose of both supplements revealed the best results in terms of highly significant lowered antioxidant activity--156.67 \(\pm\) 11.14 and 5229.12 \(\pm\) 356.12 U/mL, respectively.