Well, there are a lot of answers possible with a single abbrevation :D
Ok, since I got skipped last time I'm gonna post the next question:
What do you use Diazafluoren for?
Well, GSR (Gunshot residue) is the material coming out of the muzzle of a gun when fired.
It consists of lead, antimony, barium and graphite dust.
Forensic enough for you, Katy? :D :D
The system to categorize blood is the so called A-B-0 System. developed by Karl Landsteiner, I think.
You got 4 types: A, B, AB, and 0
And then there are alway the rhesus factors either + or -
Then you count up to 8 blood types :D