Comparison of Aγ transgene expression level (mRNA) among all HS3ɛγ and HS3ɛγ^−1086Mut lines. Average mRNA level (corrected for copy number and expressed relative to m-like mRNA level) is shown for all lines carrying HS3ɛγ (white bars) and for HS3ɛγ^−1086Mut (black bars). Brackets indicate standard error of the mean. None of the differences shown are statistically significant.