bacterial toxin

For a list of biologically injurious substances, including toxins and other materials, as well as their effects, see poison. A toxin (Greek: , toxikon, lit. (poison) for use on arrows) is a poisonous substance produced by living cells or organisms. Toxins are nearly always proteins that are capable of causing disease on contact or absorption with body tissues by interacting with biological macromolecules such as enzymes or cellular receptors. Toxins vary greatly in their severity, ranging from usually minor and acute (as in a bee sting) to almost immediately deadly (as in botulinum toxin).
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Bacterial toxin, n any poisonous substance produced by a bacterium. Two general types are common: those formed within the cell and those formed [more]Bacterial toxin - Community and Resources

Noun
1. any endotoxin or exotoxin formed in or elaborated by bacterial cells
(hypernym) toxin
(hyponym) epsilon toxin, Clostridium perfringens epsilon toxin

A toxic substance, made by bacteria, that can be modified to kill specific tumor cells without harming normal cells.