For their study, Atsuki Tanaka and Takayuki Miyazawa, of Osaka Medical University and Kyoto University, wanted to trace the historical evolution of the omicron variant of SARS-CoV2 by studying viral sequences found "in the wild" and deposited in public databases. In doing this they found around 100 separate omicron subvariants that could not conceivably have arisen through natural processes. The existence of these variants seems to provide definitive proof of large-scale lab creation and release of covid viruses. Moreover, the variants appear to form comprehensive panels of mutations typical of those used in "reverse genetics" experiments to systematically test the properties of different parts of viruses, Substacker PSMI wrote.