The human body is like an exceedingly well-fortified castle, defended by
billions of soldiers--some live for less than a day, others remember battles for
decades, but all are essential in protecting us from disease. This hidden army
is our immune system, and without it we could not survive the eternal war
between us and our microscopic enemies.
Immune explores the incredible arsenal that lives within us--how it knows what
to attack and what to defend, and how it kills everything from the common cold
to the plague bacterium. We see what happens when the immune system turns on us,
and conversely how impossible life is without its