Fig. 5

Histological examination of porcine liver and spleen tissues stained with Prussian blue iron, following the implantation of titanium and iron interference screws for periods of 3 months and 12 months. The column bar plot illustrates the semi-quantitative analyses of the stained areas of the liver and spleen in both groups—error bars, median, and interquartile range. M months, Fe iron, Ti titanium.