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Fig. 5. (A) Real-time PCR assay for the relative expression of crayfish
Procambarus clarkii ECaC mRNA in postmolt hepatopancreas, gill and
antennal gland. Expression in postmolt cardiac and axial muscle was
undetectably low relative to expression in epithelial tissues and so data were
not included. Relative quantification (RQ expressed as mean ± s.d. from
three different samples with 4-5 crayfish in each sample) was performed by
normalizing the Ct value of each sample with the Ct value of the endogenous
control (18s rRNA gene,
Ct), and finally calculated using
Ct of
control (hepatopancreas) as calibrator. (B) Quantitative RT-PCR showing
distribution of Procambarus clarkii ECaC (upper panel) and 18s rRNA
(lower panel) in a range of postmolt crayfish tissues.