A data encodingdecoding scheme includes a plurality of bar code symbols each carrying a portion of the data in which improved error correction capabilities are incorporated. As a result, simultaneous removal of diseased tissue and destruction of residual bacteria is enabled. The compositions of this invention are novel as anti-neoplastic drugs, namely as an agent for treating leukemias, lymphomas, and leiomyomas as agent for treating benign and malignant tumors, including lymphomas, leukemias, and leiomyomas. Once an obstruction is detected, the sensors may transmit signals to the central control device.