**Question:** Basophilic stippling is seen in which of the following cells:

A. Neurons
B. RBCs (Red Blood Cells)
C. Lymphocytes
D. Erythroblasts

**Core Concept:** Basophilic stippling refers to the presence of basophilic granules within a cell, which can be observed under a microscope after staining procedures. These granules contain various substances such as hemosiderin, lipofuscin, and other pigments.

**Why the Correct Answer is Right:** Basophilic stippling is seen in D. Erythroblasts (immature red blood cells in bone marrow), specifically during the later stages of erythropoiesis. Hemosiderin, a type of iron-containing pigment, accumulates within the erythroblasts, giving them a basophilic appearance under the microscope.

**Why Each Wrong Option is Incorrect:**

A. Neurons: Basophilic stippling does not occur in neurons as they lack the granules found in erythroblasts, lymphocytes, and neutrophils.

B. RBCs (Red Blood Cells): While basophilic stippling can be observed in mature RBCs due to lipofuscin accumulation, it is not typically seen in the erythroblasts (immature RBCs).

C. Lymphocytes: Basophilic stippling is not typically observed in lymphocytes, as they lack the specific granules found in erythroblasts and neutrophils.

**Clinical Pearl:** Basophilic stippling is a helpful clue for identifying immature RBCs (erythroblasts) in bone marrow samples during diagnostic evaluations, particularly when assessing erythropoiesis and evaluating conditions affecting red blood cell production or maturation.

**Correct Answer:** D. Erythroblasts