CT-guided biopsy A substance being studied in the diagnosis and treatment of glioma (a type of brain cancer) and other types of cancer. It binds to cancer cells in the brain and peripheral nervous system and may keep them from spreading. CTX comes from the venom of a type of scorpion. A form of CTX made in the laboratory is called TM-601. CTX is a type of neurotoxin. Also called chlorotoxin. |