Which blood cell type is characterized by a bilobed nucleus and red-orange granules?

Which blood cell type is characterized by a bilobed nucleus and red-orange granules?

• A. Platelets
• B. Eosinophil
• C. Lymphocytes
• D. Monocytes

Answer: (B)

Recognizing eosinophils by their appearance on a stained blood smear: a bilobed nucleus and prominent red-orange cytoplasmic granules. The granules stain with eosin, giving that distinctive orange color, and the nucleus usually has two lobes connected by a thin strand. This combination sets them apart from other white blood cells: platelets are tiny, anucleate fragments; lymphocytes have a large round nucleus with only a small amount of cytoplasm; and monocytes show a kidney-shaped nucleus with more cytoplasm and no conspicuous red-orange granules. The two-lobed nucleus with red-orange granules is the hallmark feature of eosinophils.

Recognizing eosinophils by their appearance on a stained blood smear: a bilobed nucleus and prominent red-orange cytoplasmic granules. The granules stain with eosin, giving that distinctive orange color, and the nucleus usually has two lobes connected by a thin strand. This combination sets them apart from other white blood cells: platelets are tiny, anucleate fragments; lymphocytes have a large round nucleus with only a small amount of cytoplasm; and monocytes show a kidney-shaped nucleus with more cytoplasm and no conspicuous red-orange granules. The two-lobed nucleus with red-orange granules is the hallmark feature of eosinophils.