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Fig. 3. Northern blot of sbAQP expression. (Ai) sbAQP transcripts were expressed in
the gastrointestinal tract, where it was most abundant in the hind-gut and
rectum, with lower levels detected in the mid-gut. Two transcripts of 2 kb and
1.6 kb were identified in the gastrointestinal tract. A single 2 kb transcript
was detected in the kidney. (Aii) The results of northern blot hybridisation
with ß-actin. (B) From the semi-quantitative analysis of sbAQP expression
(Ai) relative to that of ß-actin (Aii), the hind-gut and kidney were the
tissues with the highest expression of sbAQP followed by the rectum and
mid-gut. Hatched bars, 2 kb transcript; open bars, 1.6 kb transcript.