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. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: J Virol Methods. 2011 Feb 22;173(2):251–258. doi: 10.1016/j.jviromet.2011.02.013

Figure 4.

Figure 4

Quantitative detection of WNV neutralizing antibody titer using real-time monitoring of virus-induced CPE. Virus-induced CPE kinetic pattern of Vero cells presented with 106 PFU of WNV incubated with different titers of conspecific neutralizing antibody; control (ctrl), no infection. The cross line indicates the 50% decline of CI value. Linear regression between TCL50 value and the WNV PRNT antibody titer was significant between 1:20 and 1:320 with goodness of fit for the data expressed by R2. Antibody values are the reciprocal of the endpoint PRNT titers.