1. Pipa Luce Pipa Luce Italy says:

    Also Ebola and Hiv have polibasic cleavage site and their origin is natural.

    BUT all highly pathogenic virus have the same background: bad health condition (spanish flue: war, Wuhan: pollution, ebola and hiv: wars and violence)


    My question: " May weakened animals have an extracellular environment that favors the formation of the polibasic cleavage site?"

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