Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Decrease of the numbers of X-Gal-positive cells during yolk sac development
| Embryo, dpc | Cells counted in blood islands, n | LacZ-positive blue cells, n (%) |
|---|---|---|
| 8.5 | 823 | 803 (97.6) |
| 9.5 | 830 | 529 (63.7) |
| 10.5 | 1308 | 443 (33.9) |
X-Gal staining-positive cells were counted in 8.5-, 9.5-, and 10.5-dpc embryo yolk sac blood islands.
