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The blood pigment haemoglobin is a compound which can be split by diverse methods into its constituents, pigment and protein.

For a very long time, we've been extraordinarily interested in the interaction between low temperature and low oxygen. We see that they're connected because we know people who are extremely cold are not getting oxygen to their cells. And yet, they're sometimes alive.

In the course of my stay there, I also showed how one could analyse the experimental kinetic curves for the reaction of haemoglobin with carbon dioxide or oxygen by simulations in the computer, and so fit the rate constants.

If we introduce iron complexly into ooporphyrin, we obtain haemin.

Owing to the difficulty of dealing with substances of high molecular weight we are still a long way from having determined the chemical characteristics and the constitution of proteins, which are regarded as the principal con-stituents of living organisms.

This oxidation of hydrogen in stages seems to be one of the basic principles of biological oxidation.

When blood is placed under a microscope, it appears as a number of minute globules or discs, but when seen by the trained clairvoyant as it courses through the living body, blood is found to be a gas, a spiritual essence.

Reticulocytes are terminally differentiating red blood cells that do not contain lysosome. Therefore, it was postulated that the degradation of hemoglobin in these cells is mediated by a non-lysosomal machinery.

Physiology is the science which treats of the properties of organic bodies, animal and vegetable, of the phenomena they present, and of the laws which govern their actions. Inorganic substances are the objects of other sciences, - physics and chemistry.

Green, red, and mixed shades of haemins are known. If magnesium is replaced by iron in chlorophyll, green haemins are obtained. Their colour is due to a strong band in the red which is already recognized in chlorophyll.