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  Indian J Med Microbiol
 

Figure 1 Quantitative VDRL test showing prozone phenomenon at lower serum dilution (non-reactive in undiluted serum) and reactive at higher serum dilutions (ranging from 1:2 to 1:64) (100x)

Figure 1 Quantitative VDRL test showing prozone phenomenon at lower serum dilution (non-reactive in undiluted serum) and reactive at higher serum dilutions (ranging from 1:2 to 1:64) (100x)