First contact and the cellular border patrol
The specialized forces of adaptive memory
The ancient global quest to train our defenses
When defenses misfire or overreact
YOUR GOAL
Master of The human immune system
artiteacher Immunological memory
Got the blueprint locked in memory, ready for the second round.
artiteacher Memory cells store blueprints of past invaders to prevent future illnesses.
artiteacher T cells identify and destroy infected human cells to stop viruses from multiplying.
artiteacher Match memory guards to incoming germs to discover how your body remembers past infections.
Bone marrow factory: Your body produces about 100 billion new white blood cells every single day inside your bone marrow to keep your defenses fully staffed.
A long-lived lymphocyte that remains in the body after an infection to provide rapid protection against future encounters with the same pathogen. In 1957, Frank Macfarlane Burnet proposed clonal selection to explain how these cells generate immunological memory.
What is the primary function of the hundreds of bean-shaped lymph nodes in the human body?
Approximately how many antibodies can a single active B cell produce every second?
Which type of immune cell retains the "blueprints" of defeated pathogens for decades?
How much faster is the immune response when memory cells encounter a familiar pathogen a second time?
What is the name of the clear fluid that flows through the lymphatic system carrying immune cells?
What is the scientific term for the programmed cell suicide that killer T cells trigger in infected cells?