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Ethidium bromide-stained agarose gel showing PCR products of 49 Ad prototype strains. Lanes, from left to right, respectively: M, molecular weight marker III (Boehringer Mannheim); P, pooled control DNAs of representative Ad serotypes of species A to F; 1 to 49, individual Ad serotypes; N, pooled control DNA without indicated Ad species. Numbers on the left are in base pairs.
