Researchers can also comb through antibodies produced by recovered patients and select the most effective out of thousands, and then manufacture them at scale.
In a paper published in Science in June, Regeneron scientists described how they selected the two best antibodies from both recovered human patients and infected mice that were genetically modified to give them human-like immune systems.
In another paper in the same journal, scientists argued that by using two antibodies, they had guarded against the possibility that SARS-CoV-2 might randomly mutate to evade the blocking action of one, and then go on to become the dominant strain of the virus.
The company used the same "humanized mouse" technology to develop a triple-antibody cocktail which was shown to be effective against Ebola last year.
White House Dr. Sean Conley said in his initial memo Friday afternoon that Trump was "fatigued but in good spirits." He also said Trump, 74, was being treated with an experimental polyclonal antibody cocktail and was taking zinc, Vitamin D, famotidine, melatonin, and a daily aspirin.
