Fig. 4. Relative expression of troponin T (TnT) isoforms along the length of
rainbow trout. There is a significant shift in the percentage expression of
TnT S1 isoform relative to TnT S2 from anterior to posterior. The average
expression of TnT S1 increases from
75% in the anterior to 100% in the
posterior myotome. Double asterisks indicate statistically significant
variation along the length of the fish (P<0.01).