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With reference to WBC, which of the following statements is/are correct? In leukemia, there is an abnormal increase in WBC count. During parasitic infection WBC count increases in the range of 20,000-30,000

With reference to WBC, which of the following statements is/are correct? In leukemia, there is an abnormal increase in WBC count. During parasitic infection WBC count increases in the range of 20,000-30,000 Correct Answer 1 and 2 only

The correct answer is 1 and 2 only.

Key Points 

  • White blood cells are an important component of our blood system.
  • These are only 1% of our body but their effect on our health is significant.
  • White blood cells are produced inside the bone marrow and are stored in the blood and lymphatic tissues.
  • One cubic mm. Their number is 25 lakhs.
  • Leukemia -
    • It is a cancer of the blood or bone marrow.
    • This is an abnormal growth of white blood cells (WBC).
  • The normal range of white blood cells in the blood of a healthy adult human is 4,000 to 11,000.

Additional Information

  • The percentage and common range of WBCs and their types in healthy adults is as follows -
    1. Neutrophils or polymorphisms - 40 - 60%
    2. Monocytes - 2 - 8%
    3. Lymphocytes (B and T cells) - 20 - 40%
    4. Eosinophils - 1 - 4%
    5. Band or young neutrophils - 0 - 3%
    6. Basophils - 0.5 - 1%​

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