Fig. 4. The tissue distribution of arginase genes in adult rainbow trout (Onmy-ARG01 and Onmy-ARG02) is shown relative to ß-actin. Total RNA (10 µg) was loaded into each lane. Tissues include liver, kidney, gill, intestine, red muscle and heart. Intensity of signal was quantified by denisitometry (see Materials and methods). Means ± S.E.M. (N=3). Asterisks denote significant difference from the ratio of Onmy-ARG01:ß-actin levels (P<0.05).