| primitive endoderm |
 |
detected |
| regional | Expression was detected in the nuclei of ecto- and mesodermal cells and cells of the visceral endoderm in the area of the primitive streak with the highest intensity being found in the ectodermal cells. |
| primitive streak |
 |
detected |
| regional | The Cdx1 expression domain was restricted to the immediate region of the primitive streak, with a slight lateral extension within the ectoderm (see Fig 4C) |
| embryo ectoderm |
 |
detected |
| | Expression was detected in the nuclei of ecto- and mesodermal cells and cells of the visceral endoderm in the area of the primitive streak with the highest intensity being found in the ectodermal cells. |
| embryo mesoderm |
 |
detected |
| regional | Expression was detected in the nuclei of ecto- and mesodermal cells and cells of the visceral endoderm in the area of the primitive streak with the highest intensity being found in the ectodermal cells. |