“…The combined effect on HSV-2 G was substantially greater than additive by a factor of over 50-fold (Table 5). As before, BIOLF-62 plus PFA was highly synergistic; BIOLF-62 plus BVDU had only a slightly greater inhibitory effect on HSV-2 G than did the individual drugs alone ( (23,27), and cell sheets cannot develop visible plaques. Therefore, the maximum synergistic effect that could be demonstrated by a plaque reduction assay method is probably 102_ BIOLF-62, 2.5 ,ug/ml; PFA, 80 ,ug/ml; BVDU, 2.5 ,ug/ ml.…”