Fig. 3. Incorporation of [U-14C]glutamic acid into amino acids of the protein fraction of symbiotic aphids, expressed as a percentage of total incorporation. ala, alanine; asx, aspartic acid + asparagine; glx, glutamic acid + glutamine; ile, isoleucine; thr, threonine. The F values for ANOVA tests for each amino acid after arcsine-square root transformation are shown. The critical value for significance of the ANOVA tests after Bonferroni correction for 5 tests is P=0.01; *significantly different value. Mean values with different letters are significantly different (P>0.01) by Tukey’s test.