the mean value of czx levels in prostatic tissue and prostatic level/serum levels ratio ( p/s ratio ) after administration were 47.2 +/- 2.8 micrograms/g , 49.1 % at 30 minutes , 33.3 +/- 2.2 micrograms/g , 51.4 % at one hour , 22.2 +/- 2.7 micrograms/g , 60.8 % at 2 hours , 13.6 +/- 3.9 micrograms/g , 64.2 % at 4 hours , 3.04 +/- 0.54 micrograms/g , 74.5 % at 8 hours , respectively .
C1514521
prostatic tissue
C0033572
prostatic