Deficiency of parietal cell secretion lead to which type of anaemia?

Explanation

**Step-by-Step Solution:**

1. **Identify the Role of Parietal Cells**: Parietal cells are specialized epithelial cells located in the gastric glands of the stomach. Their primary functions include the secretion of hydrochloric acid (HCl) and intrinsic factor.

2. **Understand the Importance of Intrinsic Factor**: Intrinsic factor is crucial for the absorption of vitamin B12 in the intestines. Without adequate intrinsic factor, the body cannot effectively absorb vitamin B12.

3. **Recognize the Consequences of Deficiency**: When there is a deficiency in the secretion of intrinsic factor due to the loss of parietal cells, the absorption of vitamin B12 is significantly reduced.

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