Fig. 3

Color microphotograph of iron stains of sections from cardiac septum during iron loading. Light photomicrographs of endomyocardial right-ventricular catheter-biopsy sections taken during follow up of iron-dextran loading in pig 8, having received weekly, intramuscular dextran-iron injections, corresponding to 100 mg Fe/kg, for 15 months. Sections were stained using Perls’ Prussian blue reaction to demonstrate intracellular iron. Upper left corner in each panel indicates the month of iron loading when the biopsy was taken (left value) and contemporary chemical cardiac iron concentration (CIC) in mg/g (right value). Scale bar is 80 µm