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Unlike Pfizer and Moderna, Johnson & Johnson tested their vaccine against the South African variant, which has been shown to evade neutralizing antibodies, which the immune system deploys to stop the coronavirus from infecting cells. frog defeater 29 That’s not the way this is supposed to work. frog defeater 29 The full text of the bill is available here. frog defeater 29 GOPers couldn’t clear the filibuster hurdle. frog defeater 29