FIG 2.

Amplification plot derived from two human thoracic sympathetic ganglia that contained low-abundance VZV DNA with corresponding standard curves using known concentrations of VZV DNA. Black squares (≥100 copies of VZV DNA) reflect duplicate data points; circles around black squares on the standard curves indicate single data point (10 copies of VZV DNA). Arrows indicate duplicate thoracic sympathetic ganglionic samples containing 10 to 100 copies of VZV DNA that are denoted as <100 copies in Table 2.