Fig. 4

The IGHJ gene frequency in the mice of different ages. a Productive sequence IGHJ gene frequency. b Pseudogene sequence IGHJ gene frequency. c Out-of-frame sequence IGHJ gene frequency. The p values were determined using one-way ANOVA with a Bonferroni correction. All the statistically significant differences are indicated. * = p < 0.05, ** = p < 0.01