Figure 2.

Cumulative fraction of ^99mtechnetium (^99mTc) measured in urine following isotope injection, relative to the dose administered rectally. Time points represent the total activity measured for the urine collection interval. Circles and triangles denote mean values, and whiskers denote 95% confidence intervals (CIs). Values for Normosol-R fluid alone (negative control) and Normosol-R plus coital simulation and biopsy (CS + BX) are offset slightly from the actual time point so that CIs appear distinct for each study intervention.