Your Immune System: Natural Born Killer - Crash Course Biology #32
Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us - also known as our immune system. Crash Course...
========== Sex and not dying. That's what biology
is all about. And while the sex part is,
I'll grant you, a little bit sexier, not dying is
also really fantastic... something that I, personally,
like to do every single day. I, personally, like to not
die in all sorts of ways. Like, I don't jump out of planes,
I don't go into active combat zones, I don't do heroin, but I can,
however, spend time wallowing in filth with my cute
bacon-producing friends here and not have to worry about dying. Because, somehow,
my body can handle a lot of little devils on my hands,
in my air, in my food, little things that
literally want to kill me. There are more potential
human killers in this pig pen than there are in all
of the world's prisons, but I don...