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Differences in in vitro laboratory setup, as used by CZ-MD mouth spray, compared to the common approach to assess viral infectivity. (Top) Setup by the manufacturer (see Table 1 for sources [18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36]). (Bottom) Setup of common host cell models (see Table S1).
