Fig. 3. In situ hybridization of trpv6 and ca2 in
zebrafish gills. Expression of trpv6 and ca2 mRNA increased
significantly in 30 day cold-acclimated gills. trpv6- and
ca2-expressing cells were found in the gill filaments and the
lamellae in the cold-acclimated group, whereas in the control group these
cells only appeared in gill filaments. Scale bar, 50µm.