Table 2.
| Appearance of head vessels1 | ||||||
|---|---|---|---|---|---|---|
| e9.5 | e10.5 | |||||
| Normal | Syncytial2 | Blunt3 | Normal | Syncytial | Blunt | |
| Grossly abnormal nulls | 0 | 2 | 0 | 0 | 5* | 1 |
| Grossly normal nulls | 2 | 3 | 2 | 2 | 0 | 2 |
| Grossly normal hets | 10 | 1 | 0 | 5 | 0 | 0 |
1
Detected by anti-Pecam-1 antibody staining.
2
Syncytial refers to the appearance of small vascular plexus in the head;
3
Blunt refers to the appearance of large head veins.
*
In addition to these five, two other embryos had unremodeled head vasculature with dilated small vessels and very few large vessels in the head.