What is described as a poison or toxin produced inside bacteria and released upon the cell's death?

Endotoxin is a type of poison or toxin that is indeed produced within bacteria and released when the bacterial cell dies. Specifically, endotoxins are components of the outer membrane of certain bacteria, particularly Gram-negative bacteria. Upon the death of these bacteria, endotoxins are released into the environment, where they can trigger strong immune responses in humans and animals.

This is significant in food safety and public health, as endotoxins can lead to serious illness. The immune response can cause symptoms ranging from fever and chills to more severe reactions like septic shock. Understanding the nature and behavior of endotoxins is crucial for preventing foodborne illnesses, especially when handling food products that may be contaminated with pathogenic bacteria.

The other choices do not fit the description of being a toxin released upon bacterial cell death. Exotoxins, for instance, are toxins that are secreted by living bacteria and can be harmful even in small amounts. Detergent and corrective actions do not pertain to bacterial toxins and are unrelated to the context of bacterial-produced toxins.