[Study on levels of chemotherapeutics in prostatic tissue and prostatic fluid or seminal plasma. 2. Concentrations of erythromycin (EM), aminobenzylpenicillin (ABPC)-methylchlorophenylisoxazolylpenicillin (MCIPC) and sulfamethoxazole-trimethoprim (SMX-TMP) (AUTHOR'S TRANSL)].