Table 1.
Change in the numbers of dyed and undyed R. speratus workers after mixing thirty workers fed Nile Blue A or Neutral Red

Marking Regent	Number of Dyed: Undyed Post-Exposure
	Initial		7 days		14 days		21 days
	Dyed	Undyed	Dyed	Undyed	Dyed	Undyed	Dyed	Undyed
Nile Blue A	30	30	29.7±0.5	29.3±0.5	28.7±0.9	29.0±0.0	28.3±0.5	27.7±0.5
Neutral Red	30	30	29.3±0.9	29.0±0.0	28.3±0.5	28.3±0.5	28.3±0.5	28.0±0.0