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Table 2 Virucidal assay: effect of preincubation of N. latifolia extract with HSV-2

From: In vitro anti-Herpes simplex virus activity of crude extract of the roots of Nauclea latifolia Smith (Rubiaceae)

Incubation condition Extracta Virus titer (PFU)b
Temp (°C) Duration (h)   
37 0 - 5.56 × 105
37 0 + 3.52 × 105
37 2 - 5.29 × 104
37 2 + 3.42 × 104
4 2 - 4.88 × 105
4 2 + 6.03 × 105
  1. aConcentration: 33 μg/ml.
  2. bThe values are the means ± SD of data derived from three independent experiments performed in duplicate.