Because human cells normally do not develop antibodies to components of their own cells, Colonno injected human cells into mice, which did produce an antibody to the common receptor.
Studies have shown that the swine flu H1N1 is common throughout pig populations worldwide, with 25 percent of animals showing antibody evidence of infection.
研究表明H1N1猪流感在全世界猪群中都比较普遍，并且抗体证据表明有25%的动物被感染过。
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Figure 1 Illustrates the most common protein array, the antibody microarray.