Hi all, our Patho professor presented anemia in morphological categories (microcytic & macrocytic) and I'm trying to understand why the RBC's are the size they are. For microcytic anemias, I think it is due to the lack of iron, thus the lack of hemoglobin (the main RBC component). As for macrocytic, I have no idea why the RBC would be enlarged. Any info would be greatly appreciated!