Format

Send to

Choose Destination

Chick embryo survival under acute carbon monoxide challenges.

Author information

1
Instituto di Biologia Cellulare, Universit√°, Perugia, Italy.

Abstract

1. Early chick embryos (up to 7 days) survive longer in 1% CO than older ones. As shown by the partition constants of the oxygen-carbon monoxide equilibrium, such a behavior cannot be related to the different hemoglobin patrimonies. 2. In vivo, early embryo hemoglobin is completely turned into its CO derivative within about 15 min according to a step-wise progression which reflects the peculiar embryonic pathway of the blood circulation. 3. Diffusing oxygen is sufficient to keep early embryos alive for a long time. 4. Before the chorioallantois is formed, the vascular area acts as the embryonic respiratory organ.

PMID:
2571447
DOI:
10.1016/0300-9629(89)90794-9
[Indexed for MEDLINE]

Supplemental Content

Loading ...
Support Center