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Table 3 Absence of XMRV in CFS patients from the U.S

From: Serologic and PCR testing of persons with chronic fatigue syndrome in the United States shows no association with xenotropic or polytropic murine leukemia virus-related viruses

   XMRV Positive
Population N pol pol2 gag1 WB gag1
RT-PCR
gag2
RT-PCR
Severe CFS 31 0/31 0/28 0/28 0/28 0/28 0/28
Unclassified CFS 14 0/14 0/11 0/11 0/11 0/11 0/11
CFS Negative 42 0/42 0/9 0/9 0/9 0/9 0/9
TOTAL 87 0/87 0/48 0/48 0/48 0/48 0/48
  1. Cooperative Diagnostics pol real-time PCR test, CDC pol (pol2) and gag DNA PCR, gag RT-PCR, and Western blot (WB) results.