Measurement of Human Postural Sway

I mm thick were exposed on X-ray paper. Component I would be shown on the X-ray paper as the area emitting the highest intensity of radiation. The kidney slices were then photographed so that anatomical boundaries were superimposed on the radio-autograph. Component I in the normal kidney supplies the cortex in a homogeneous fashion. An identical location for component I was seen in the autotransplant and in the homotransplant within two hours of operation. As rejection progressed, areas of cortex appeared which were not perfused by component I and eventually the fastest flowing component was found to perfuse the outer medulla instead of the cortex (Rosen et al. 1967).