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. 2008 May 30;74(14):4271–4276. doi: 10.1128/AEM.00539-08

FIG. 2.

FIG. 2.

Concentration of NOR by PGM-MB. Samples containing various amounts of NOR were concentrated by PGM-MB. I (triangle), B (filled circle), and U (square) represent input, beads recovered, and unbound, respectively. Panels A, B, C, and D represent virus loads of 10, 1, 0.1, and 0.01 RT-PCR unit, respectively. The difference in Ct values between beads recovered and input B indicates that viruses are concentrated by using PGM-MB. A 3.3-fold difference in Ct values represents a 10-fold difference in concentrations. NOR can be concentrated at least 100-fold.