2009 Group Project 4: Difference between revisions
From Embryology
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|+Mouse embryonic stages of development from fertilization to zona free blastocyst ( | |+ Table 1: Mouse embryonic stages of development from fertilization to zona free blastocyst (Stages 1 to 5) | ||
!Theiler Stage !!Embryonic | !Theiler Stage !!Embryonic Age in Days Post Coitum (dpc)!!Stage Characteristic !!Cell Characteristics !!Zona Pellucida !!Location !! | ||
|- | |- | ||
|1 | |1 | ||
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(range 2-4) | (range 2-4) | ||
|Change from Morula to Blastocyst | |Change from Morula to Blastocyst | ||
-Intra-cellular matrix | -Intra-cellular matrix present | ||
-Blastocoelic cavity evident | -Blastocoelic cavity evident | ||
|16-40 compacted cells | |16-40 compacted cells | ||
- | -Inner cell mass | ||
-Outer layer of trophectoderm cells | -Outer layer of trophectoderm cells | ||
|Present | |Present | ||
Revision as of 16:22, 22 August 2009
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
