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Table 1 EST library IDs categorized by the description of developmental stages. Each categorized mouse developmental stage contained about 22,300 (409–71,504) EST counts on average, which corresponded to 2,900 (194–5,923) non-redundant ENSEMBL gene entries on average. Developmental status was based on Manipulating the Mouse Embryo) [27] and The Mouse [28].
| Stage | Developmental status | dbEST library ID |
|---|---|---|
| 1 | Unfertilized egg | 16178, 16177, 10029, 14142, 1389, 867 |
| 2 | Fertilized egg, 1 cell | 12233, 2589, 12241, 1119, 17903 |
| 3 | 2 Cell | 862, 1382, 5391 |
| 4 | 4 Cell | 12243, 15709, 1524, 7328 |
| 5 | 8 Cell | 9845, 15708, 1381 |
| 6 | Morula | 12244, 1532, 18029 |
| 7 | Blastocyst, E4.0 | 12245, 10026, 1310, 1021, 875, 850, 18027, 12246, 18021 |
| 8 | Trophoblast, ES cell | 10033, 10023, 14556, 915, 10025, 10024, 14558 |
| 9 | Formation of egg cylinder (E5.0) | 12231, 18022 |
| 10 | Proamniotic cavity in primitive ectoderm (E6.0) | 2565 |
| 11 | Advanced endometrial reaction, gastrulation starts, embryonic axis determined (E6.5) | 13851, 10561 |
| 12 | Primitive streak, amnion forming (E7.0) | 5422, 547, 2381, 375, 2790, 12316 |
| 13 | Neural plate, presomite stage (E7.5) | 10036, 3777, 10562, 844 |
| 14 | Neural folds, otic placode, 1–7 somites, hindgut pocket, 1st pharyngeal arch (E8.0) | 2566, 1913 |
| 15 | Neural folds close, 8–12 somites, 1st and 2nd pharyngeal arch, turning of embryo (E8.5) | 10039, 538, 4042 |
| 16 | Formation and closure of anterior neuropore, olfactory placode, 13–20 somites (E9.0) | 5432, 7256 |
| 17 | Forelimb bud, 21–29 somites (E9.5) | 5392, 13850 |
| 18 | Hindlimb and talbud, 30–34 somites (E10) | 1884, 2517, 16788 |
| 19 | Deep lens pit, 35–39 somites (E10.5) | 1891, 15706, 528 |
| 20 | Closure of lens vesicle, 40–44 somites (E11.0) | 1885, 4142, 12312, 2557, 2578, 9944, 18018 |
| 21 | Forefoot plate, lens vesicle detached (E11.5) | 15707, 845 |
| 22 | Hind foot plate, earliest sign of fingers (E12.0) | 5319, 9846, 5464, 5423, 2514 |
| 23 | Anterior footplate indented, (E13.0) | 12258, 2521, 2554, 2521, 5469, 2555 |
| 24 | Skin layers, chondrification of ribs (E13.5) | 532, 15702 |
| 25 | Fingers separate distally (E14.0) | 12259, 2525 |
| 26 | Fingers & toes separate (E15.0) | 17914, 2596, 12265, 2522, 17951, 2594 |
| 27 | Rib ossification (E15.5) | 529, 12979 |
| 28 | Reposition of umbilical hernia (E16.0) | 12260, 2523, 18085, 12247 |
| 29 | Wrinkled skin, umbilical hernia gone (E17.0) | 12261, 18071, 12250, 12248, 12251, 2516, 1907 |
| 30 | Auditory ossicles (E17.5) | 12267, 18087 |
| 31 | Iris and ciliary body (E18.0) | 12266, 1770, 12313 |
