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-.
Whole blood donors can donate every 56 days. Red blood cells are the oxygen carrying cells. They can take two weeks or longer to fully return to normal. You can donate platelets (apheresis donation) every two weeks â up to 24 times in 12 months. Platelet and plasma components are regenerated in the body more quickly than red cells.