Table 3. Summary of simple sequence repeat (SSR) types in the P. yessoensis transcriptome.

SSR Type	No. of SSR-containing ESTs	No. of SSRs	% of total SSRs
Di-nucleotides	557	580	21.1%
Tri-nucleotides	936	1,084	39.4%
Tetra-nucleotides	404	426	15.5%
Penta-nucleotides	387	401	14.6%
Hexa-nucleotides	245	257	9.4%
Total	2,480	2,748	100%