From Infection to Immune Control
Entry & Infection
A virus reaches susceptible cells and may enter cells that carry compatible receptors.
Local Alarm
Infected and immune cells release signals that help recruit and activate defenses.
Innate Response
Fast, broad defenses help contain infection and remove damaged or infected material.
Adaptive Response
B and T lymphocytes can expand after recognizing specific viral antigens.
Control & Memory
Pathogen levels can fall as immune activity succeeds, while some lymphocytes persist as memory cells.