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Fig. 6. Expression of pthrp, pth1r and casr mRNAs (N=10)
is significantly downregulated in pituitary gland (A) in the fish exposed to
low calcium in dilute seawater for 30 days, whereas gill tissue (B) shows a
significant upregulation of pthrp and pth1r mRNAs under
these conditions. Asterisks indicate significant difference
(P<0.05) compared with the controls (group a). Values are means
± s.d.