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Originating in bone marrow , circulating...

Originating in bone marrow , circulating in blood for 1-2 days migrating to connective tissue and forming macrophages is a characteristic of

A

Lymphocytes

B

Basophils

C

Eosinophils

D

Monocytes.

Text Solution

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The correct Answer is:
### Step-by-Step Solution: 1. **Identify the Origin**: The question states that the cell originates in the bone marrow. We know that several types of blood cells are produced in the bone marrow, including lymphocytes, basophils, eosinophils, and monocytes. 2. **Circulation in Blood**: The next characteristic mentioned is that the cell circulates in the blood for 1-2 days. All the mentioned cell types (lymphocytes, basophils, eosinophils, and monocytes) can circulate in the blood, so this characteristic alone does not help us narrow it down. 3. **Migration to Connective Tissue**: The question specifies that the cell migrates to connective tissue. This is a crucial point because not all blood cells migrate to connective tissues in the same way. 4. **Formation of Macrophages**: The final characteristic is that the cell forms macrophages after migrating to connective tissue. Among the options provided, only monocytes can differentiate into macrophages once they enter the tissue spaces. 5. **Conclusion**: Based on the characteristics provided, the correct answer is **monocytes**. They originate in the bone marrow, circulate in the blood for a short period, migrate to connective tissue, and then differentiate into macrophages.
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