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Hemoglobin Portland II (also referred to as ζ 2 β 2 or HbE Portland-2) is a form of hemoglobin existing at low levels during embryonic and fetal life, composed of two zeta chains and two beta chains.
Howell–Jolly bodies: small, round inclusions seen in erythrocytes (peripheral blood – MGG stain) This DNA appears as a basophilic (purple) spot on the otherwise eosinophilic (pink) erythrocyte on a standard H&E stained blood smear.
A normal Haller index should be about 2.5. Chest wall deformities such as pectus excavatum can cause the sternum to invert, thus increasing the index. [6] [7] In severe asymmetric cases, where the sternum dips below the level of the vertebra, the index can be a negative value. [8]