Fig. 3.

Kernel density estimates of the distribution of IGF-1 Ea splice variant mRNA compositional ratios in a cohort of 20 different human tissues. IGF-1 Ea splice variant mRNA compositional ratio (Ratio 1) is defined in Fig. 2 and in Table 1. Bandwidth selection: a Scott rule of thumb, b Silverman rule of thumb, c unbiased cross-validation, d Sheather-Jones plug-in