Which was not a result of the 1898 discovery of the four blood types?
a. improved blood transfusion safety
b. effective blood preservation solutions developed
c. elements of blood separated via centrifuge
d. all blood types made compatible with each other

The right answer is D. All blood types made compatible with each other

Blood is a liquid tissue that can be easily removed from a healthy individual for transfusion to a sick individual. However, despite an identical cellular composition of this tissue, there is variability, or polymorphism of the various elements of blood between individuals, which makes transfusion impossible between certain groups of people.

People with the same characteristic are said to belong to the same blood group. In general, these characteristics are evidenced by haemagglutination techniques using antibodies or lectins specifically recognizing an epitope. In case of problems, molecular biology can be used. These epitopes, determining various phenotypes, are genetically transmitted.

The discovery of the ABO system, the first of these systems in 1900 by Karl Landsteiner, made it possible to understand why some blood transfusions were successful, while others ended tragically.

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.

allowed for the prediction of the properties of missing elements.