Diversity of cDNA libraries. The libraries (x-axis) are ranked according to their diversity (blue dot on y-axis). The names of the libraries on the x-axis correspond to those listed in Table 1. The diversity of a library is computed as the number of conreads in which the library has at least one read included, divided by the total number of reads present in the library. (See Materials and methods, in the text, for further details.) Two additional measures are included as well. 'top10' (green dots) refers to the fraction of reads comprising the 10 most expressed contigs in that particular library. 'hk80' (red dots) refers to the fraction of reads representing the 65 housekeeping candidates expressed in more than 80 libraries listed in Additional data file 1 (Table S2). Brain and testes libraries are among the most diverse. These also appear as the most diverse from the average diversity for each of the 35 tissues (not shown). Note that the normalized library Pla is among the most diverse tissues, as one would expect a normalized library to be.
Gorodkin et al. Genome Biology 2007 8:R45 doi:10.1186/gb-2007-8-4-r45