Yes is clear, but Dr Gandini say us different cronology about the first tests done for research (not ufficial) by Uni Missouri, outside of the first sample of dog on wich the research develop. But is not very important
Important is the fact that in their choices of breeding, aimed at combating a disease, a test can be considered valid only after all the necessary scientific availment, and then from 2009, which is a recent test. All Veterinay says than is new the possibility to select in breeding (with all scientific bases) SOD1 gene.