The complement system[1] is somewhat of an amazing look at how inanimate parts of our immune system are like little circuits and circuit breakers in chain reactions, completely triggered at random (i.e you need to "bump" into it, it is not an active entity).
The complement system[1] is somewhat of an amazing look at how inanimate parts of our immune system are like little circuits and circuit breakers in chain reactions, completely triggered at random (i.e you need to "bump" into it, it is not an active entity).
[1] - https://en.wikipedia.org/wiki/Complement_system