In Countdown #50, Jimmy Olsen interviews an incarcerated Joker about the murder of Duela Dent, who had called herself the Joker's Daughter. The Joker states that he never had any daughter, and expresses awareness of the Multiverse's existence and of shifts in reality. The Joker appears as he did before Batman #655.
All blood is made of the same basic elements, however not all blood is alike. There are eight common blood types. In an emergency, blood type O- can be given to anyone because it is most likely to be accepted by all blood types. O- is the Universal Donor. Type A+ can donate to A+, AB+. Type A- can donate to A-, A+, AB+, AB-.
It is a constant struggle for the blood banks and transplant centers to maintain an adequate supply. The answer to your question is not the same for both organ and blood donation, so I will first address blood donation. Yes, you can donate blood, if you meet the following criteria: 1  Your sugar level is controlled. 2  You are in good health. 3  Your blood pressure is below 180/100. 4  You are not anemic (low red blood cells).