2009 Group Project 4
From Embryology
MOUSE
Timeline of Development
Staging
| Theiler Stage | Embryonic Age in Days Post Coitum (dpc) | Stage Characteristic | Cell Characteristics | Zona Pellucida | Location | |
|---|---|---|---|---|---|---|
| 1 | 0-0.9
(range 0-0.25) |
One-celled embryo (fertilized) | One cell | Present | ||
| 2 | 1
(range 1-2.5) |
Dividing egg | 2-4 cells
- 1st cleavage after 24hrs |
Present | ||
| 3 | 2
(range 1-3.5) |
Morula (early to fully compacted) | 4-16 cells | Present | Oviduct. Usually near utero-tubal junction. | |
| 4 | 3
(range 2-4) |
Change from Morula to Blastocyst
-Intra-cellular matrix present -Blastocoelic cavity evident |
16-40 compacted cells
-Inner cell mass -Outer layer of trophectoderm cells |
Present | Uterine lumen | |
| 5 | 4
(range 3-5.5) |
Zona free Blastocyst | Absent | Uterine lumen |
History of Model Use
Genetics
Current Embryology Research
ANAT2341 group projects
Project 1 - Rabbit | Project 2 - Fly | Project 3 - Zebrafish | Group Project 4 - Mouse | Project 5 - Frog | Students Page | Animal Development
