In the discussion, it is established that invading bacteria are typically phagocytosed by specialized immune cells known as phagocytes. However, when non-phagocyte cells become infected, they are recognized by cytotoxic T-cells, which target and destroy these infected cells. This suggests that infected non-phagocyte cells are generally not salvageable and face destruction. The conversation also touches upon the immune response to damaged cells, such as those with severe DNA damage or infections, which often leads to programmed cell death (apoptosis). There is uncertainty regarding any potential mechanisms that might allow for the rescue of these damaged cells without their destruction.