A multi-million dollar effort to produce a test to guide treatment for a potentially lethal skin cancer recently fell apart after the scientific investigator discovered that the commercial antibodies he was using were unreliable.
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A blood test developed by Harvard researchers checks for evidence of past infection with more than a thousand strains of virus, from about 200 virus families. The swine flu virus shown here, A/CA/4/09, rarely infects humans.
C. S. Goldsmith/CDC