Final answer:
The non-characteristic feature of inflammation is the inactivation of macrophages. Inflammation includes increased blood flow leading to redness, and fever is not a cardinal sign of inflammation, but a systemic response.
Step-by-step explanation:
The characteristic that is not a part of inflammation is d. Inactivation of macrophages. Inflammation typically involves increased vascular permeability and edema, vasodilation, and pain as its characteristics. Macrophages play a crucial role during the inflammation process by being one of the main types of cells that respond to tissue injury. They are involved in phagocytosing bacteria and cellular debris and releasing cytokines that contribute to the inflammatory response.
The redness associated with inflammation is primarily caused by c. increased blood flow, due to vasodilation. Inflammatory chemical signals from injured cells, such as histamine, cause the widening of blood vessels. While inflammation can lead to redness, heat, swelling, and pain, fever is not a cardinal sign of inflammation but rather a systemic response often associated with infection.