Table 1. Major characteristics of DGE libraries and tag mapping to the UniGene transcript database.
| C | N96 | N168 | ||||
| Distinct Tag | Total Tag | Distinct Tag | Total Tag | Distinct Tag | Total Tag | |
| Raw Data | 789417 | 7767249 | 377998 | 6257249 | 380240 | 6659396 |
| Low Quality Tag | 23718 | 26271 | 4775 | 7247 | 4443 | 6698 |
| Adaptor Tag | 1 | 83 | 1 | 22 | 1 | 30 |
| Tag CopyNum = 1 | 516291 | 516291 | 231292 | 231292 | 228364 | 228364 |
| Clean Tag | 249407 | 7224604 | 141930 | 6018688 | 147432 | 6424304 |
| CopyNum >1 | 249407 | 7224604 | 141930 | 6018688 | 147432 | 6424304 |
| CopyNum >5 | 80567 | 6765151 | 54053 | 5776605 | 56305 | 6172785 |
| CopyNum >10 | 50762 | 6540885 | 36201 | 5641671 | 37717 | 6032477 |
| CopyNum >20 | 32580 | 6276679 | 24523 | 5471275 | 25596 | 5855124 |
| CopyNum >50 | 17820 | 5804733 | 14472 | 5146248 | 14849 | 5508658 |
| CopyNum >100 | 10562 | 5288358 | 8989 | 4755293 | 9125 | 5099881 |
| Tag Mapping | ||||||
| All Mapping | 118980 | 5228761 | 70709 | 4533457 | 75250 | 4921979 |
| Unambiguous Mapping | 98305 | 3961692 | 58288 | 3331762 | 62087 | 3562350 |
| Unknown Tag | 130427 | 1995843 | 71221 | 1485231 | 72182 | 1502325 |
All Mapping represents the number of all tags mapped to the UniGene virtual tag database, Unambiguous Mapping represents the number of unambiguous tags mapped to the UniGene virtual tag database, unambiguous tags indicate the tags matched only to one gene.