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Table 1 Sex-inducing activity of the precipitates from samples extracted with phosphate-buffered saline (PBS)

From: Sex-inducing effect of a hydrophilic fraction on reproductive switching in the planarian Dugesia ryukyuensis (Seriata, Tricladida)

Test food Number of test worms that developed a pair of ovaries (%) Number of test worms that developed a copulatory apparatus (%)
Dugesia ryukyuensis ppt-1 44/49 (89.8 ± 2.3) 1/49 (2.0 ± 2.0)
  ppt-2 21/50 (42.0 ± 6.0) 0/50 (0.0 ± 0.0)
Bdellocephala brunnea ppt-1 36/50 (72.0 ± 12.0) 0/50 (0.0 ± 0.0)
  ppt-2 4/49 (8.1 ± 3.9) 0/49 (0.0 ± 0.0)
  Minced worms 49/49 (100.0 ± 0.0) 47/49 (96.0 ± 4.0)
  1. The precipitates were obtained as described in Figure 1. Twenty-five test worms were fed approximately 400 mg of each sample for 4 weeks. Means and standard errors of duplicated experiments are shown. ppt, precipitate.