Subject: What does the juice that is in raw meat consist of? Is it blood?

I enjoy eating my steaks rare and have always assumed that the juice 
contained was something other than blood.  I was recently informed that it 
is blood and so is the juice on raw hamburger meat.  I thought that when 
an animal was slaughtered the blood was completely drained from the body.  
Please help clear this us.  I am going to a steakhouse tonight for dinner 
and intend on eating a juicy yet non bloody steak. Thanks

Re: What does the juice that is in raw meat consist of? Is it blood?