Characterization of the global profile of genes expressed in cervical epithelium by Serial Analysis of Gene Expression (SAGE)

Table 1 SAGE data general statistics.

Frequency distribution ^a	Tags	Individual Genes^b
>200 tags	1,348 (4.4%)	5 (0.11%)
100–200 tags	2,371 (7.8%)^c	21 (0.5%)^d
20–100 tags	5,536 (18.19%)	80 (1.8%)
5–19 tags	6,349 (20.8%)	575 (13.2%)
2 – 4 tags	13,316 (43.7%)	3,050 (70.4%)
1 tag	1,498 (4.9%)	609 (14.1%)
Total	30,418 (100%)	4,340 (100%)
No of unique tags	8,062
Tags with SAGE database matches	5,255
No. of different transcripts matched	4,340
No of poorly characterized transcripts	1,215
Genes with known function^e	2,453

^aCalculation of the frequency distributon of a given tag was based on total tags sequenced in library.
^bSome genes have more than one tag, hence we search for individual genes in a database created in SQL language.
^c,dPercentage of tags or genes in frequency group.
^ebased on FatiGO Datamining website [31]

ISSN: 1471-2164