It's a physiiological thing about the blood clotting. When the heart is pumping if it didn;t clot the calf would bleed to death. He doesn;t know why the clot deal is accurate, just that it is.
The reason for flushing in the time frame they do it is because by about day eight it enters the blastophys(sp) stage and it is much more fragile then the earlier stage.
The reason for flushing in the time frame they do it is because by about day eight it enters the blastophys(sp) stage and it is much more fragile then the earlier stage.