Decrease of hemoglobin, or oligochromemia, is very common and important.
This is a deficiency of hemoglobin, or red corpuscles, or both.
Hemoglobin and red corpuscles are always greatly diminished.
This latter class often have a sluggish circulation, besides a lack of hemoglobin.
The chlorophyll of the leaves and the hemoglobin of the blood are similar in constitution.