| Autor: |
Panigel, M., Kraemer, D. C., Kalter, S. S., Smith, G. C, Heberling, R. L. |
| Zdroj: |
Anatomy and Embryology; January 1974, Vol. 147 Issue: 1 p45-62, 18p |
| Abstrakt: |
The baboon preimplantation stages were examined using light and electron microscopy. Six cases were studied at 2, 3, 4, 5, 7 and 8 days estimated fertilization age. The first 3 specimens were composed of 2, 8 and 24 blastomeres respectively. At 5 days, 30 to 40 cells were counted and more than 60 cells in later stages. Primitive “trophoblast cells” differentiate at 7 days and a crescentic blastocoele appears at 8 days. Shedding of the zona pellucida is not observed in the 7 and 8 day specimens. The preimplantation period is longer in the baboon than in man. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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