Antibody production has 4 phases: lag, log, plateau, and what final phase?

The final phase of antibody production is the decline phase. This phase follows the plateau phase, during which the concentration of antibodies reaches a maximum and remains stable for a period of time. The decline phase reflects a reduction in antibody levels as the immune response subsides, and memory cells may remain while the immediate antibody response diminishes. This phase is important because it signifies the end of the active immune response and allows the body to return to homeostasis. Understanding this sequence is crucial for interpreting immune responses in laboratory settings and for assessing vaccine efficacy and overall immune health.