Blood Formation in Infancy
نویسندگان
چکیده
There is general agreement that the fall in haemoglobin after birth is an expression of the increased oxygen saturation of the blood when lung replaces placenta as a source of oxygen. We have sought to express this idea concretely, to show that the changes which occur in the form and number of red cells after birth are due to variations in the erythropoietic activity of the marrow, and finally to infer that this activity is itself governed by the need to maintain the oxygen content of the blood at a constant level.
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