Hydrogen sulphide was evolved through the activity of sulphate-reducing bacteria when the water was completely deoxygenated.
In short, deoxygenated hemoglobin is paramagnetic while oxygenated hemoglobin is diamagnetic.
Although the reason is not fully understood, it is apparent that deoxygenated blood from the pump twin is perfused to the acardiac twin.
This is because the spectrum of light absorbed by hemoglobin differs between the oxygenated and deoxygenated states.
Blood flow to the liver is unique in that it receives both oxygenated and (partially) deoxygenated blood.
It is optical molecular imaging for hemoglobin both oxygenated and deoxygenated.
Instead, deoxygenated water is expelled rapidly back through the apical aperture through muscular action once every ten to twelve minutes.
Once the blood has become deoxygenated it travels through venules then veins and back to the heart.
