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Table 2.

Values of the Thiotaurine: (thiotaurine+hypotaurine) ratio in symbiont-containing tissues of three hydrothermal-vent species before and after 25 min incubation with sulphide (Na2S) or thiosulphate(Na2S2O3)

Thiotaurine: (thiotaurine+hypotaurine)
C. magnificaB. thermophilusR. pachyptila
N=6N=5N=4
T0 0.83 (0.69-0.90) 0.51 (0.41-0.73) 0.38 (0.03-0.53) 
Na2   
0.89 (0.84-0.92) 0.52 (0.41-0.75) 0.50 (0.07-0.68) 
0.25 mmol 1−1 0.93 (0.89-0.96) 0.73 (0.61-0.83) 0.79 (0.39-0.96) 
0.5 mmol 1−1 0.93 (0.87-0.96) 0.68 (0.56-0.76) 0.78 (0.31-0.97) 
1 mmol 1−1 0.94 (0.88-0.97) 0.42 (0.12-0.53) 0.89 (0.64-0.99) 
Na2S2O3 (1 mmol 1−10.88 (0.81-0.97) 0.66 (0.56-0.77) 0.51 (0.11-0.68) 
Thiotaurine: (thiotaurine+hypotaurine)
C. magnificaB. thermophilusR. pachyptila
N=6N=5N=4
T0 0.83 (0.69-0.90) 0.51 (0.41-0.73) 0.38 (0.03-0.53) 
Na2   
0.89 (0.84-0.92) 0.52 (0.41-0.75) 0.50 (0.07-0.68) 
0.25 mmol 1−1 0.93 (0.89-0.96) 0.73 (0.61-0.83) 0.79 (0.39-0.96) 
0.5 mmol 1−1 0.93 (0.87-0.96) 0.68 (0.56-0.76) 0.78 (0.31-0.97) 
1 mmol 1−1 0.94 (0.88-0.97) 0.42 (0.12-0.53) 0.89 (0.64-0.99) 
Na2S2O3 (1 mmol 1−10.88 (0.81-0.97) 0.66 (0.56-0.77) 0.51 (0.11-0.68) 

T0, before incubation.

Values are means (range in parentheses).

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