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Table 4 Focus formation after removal of Porphyridium sp. polysaccharide

From: Anti-viral activity of red microalgal polysaccharides against retroviruses

Porphyridium sp. polysaccharide Number of foci1
  MuSV-124 MuSV/MuLV
Not added 100 ± 6 70 ± 5
Not removed 0 0
Removed at:   
0 h after infection 75 ± 7 65 ± 4
24 h after infection 64 ± 6 50 ± 5
72 h after infection 55 ± 20 ± 4
  1. 1Means of five cultures ± SD 100 μg/ml of Porphyridium sp. polysacharide were added 2 h before infection and removed at the indicated times. Foci were scored 12 days postinfection. h means hours.