This section is from the book "A Manual Of Physiology", by Gerald F. Yeo. Also available from Amazon: Manual Of Physiology.
The stroma forms only about 10 per cent, of the solid parts of the corpuscles, the rest being haemoglobin. The proteid basis of the stroma is probably made up of a globulin, also containing lecithin, cholesterin and fats in minute proportions. There is little more than one-half per cent, of inorganic salts in the red blood corpuscles, of which more than half consists of potassium phosphate and chloride.
 
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