Human and yeast subsets of average transcript lengths significantly greater than that of the corresponding respiratory electron transport chain (ETC) subset.

The P-value of Equation (12) is calculated for the average transcript length in nucleotides of each human or yeast subset of genes relative to the average transcript lengths of = 1,460 and 995 nt of the human and yeast respiratory ETC subsets of = 55 and 22 transcripts, respectively. The subsets of human transcripts that are most abundant in either the GBM tumor only or the normal brain only are considered at each of the overexpression cutoffs of .