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Fig. 6. Northern blot analysis of taurine transporter mRNA in mussels exposed to
changes in ambient salinity. (A,B) Time course of mussel taurine transporter
(muTAUT) mRNA abundance in the mantle, gill and adductor muscle of mussels
exposed to 2x seawater (A), 0.5x seawater (B), respectively. Total
RNAs extracted from three mussels and mixed for minimization of individual
variability. Lower panels show the rRNA signals of ethidium bromide-stained
gel. (C) Depression of muTAUT mRNA expression by the addition of taurine.
Northern blot analysis was performed using 20 µg of total RNAs from the
mantle of mussels exposed to 0.5x seawater with or without 25 mmol
l-1 taurine for 24 h. RNAs loaded in each lane were extracted from
different specimens.