I don't remember, I'd have to do some research.
I'm sorry, I was mistaken. It isn't heparin they are lacing the bombs with, it's rat poison (warfarin-a different kind of blood thinner).
I think you're mistaken about the hepatitis. As with heparain, they would need access to medical facilities, and hepatitis would be even harder to get than the heparin. I just don't see it. After searching, I also didn't find any basis for your assertion.
There are however, many, many articles about the use of the blood thinner in them.
Here are just two I found:
http://www.factsofisrael.com/blog/archives/000166-print.html
http://www.icje.org/id129.htm