Vitamin `B_(12)` deficiency in the body cause megakaryocytic anemia. The secretion of which of the following cells is required for the absorption of `B_(12)` ?

Options

A. Oxyntic cells
B. Neck cells
C. Chief cells
D. Crypts of Lieberkuhn

Answer

To solve the question regarding which cells are required for the absorption of Vitamin B12, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Vitamin B12 Absorption**:
- Vitamin B12 is crucial for various bodily functions, including red blood cell formation. Its absorption primarily occurs in the small intestine.

2. **Identifying the Role of Different Cells**:
- **Auxinitic Cells**: These cells are found in the gastric glands of the stomach. They secrete hydrochloric acid (HCl) and intrinsic factor.
- **Neck Cells**: These cells primarily secrete mucus in the gastric glands, which protects the stomach lining but does not play a role in B12 absorption.
- **Chief Cells**: These cells secrete digestive enzymes such as pepsinogen and gastric lipase, which are important for digestion but not for B12 absorption.
- **Crypts of Leber-Cohen**: These are found in the small intestine and are associated with the secretion of various enzymes but do not directly contribute to the absorption of B12.

3. **Focusing on Intrinsic Factor**:
- The intrinsic factor, secreted by auxinitic cells, is essential for the absorption of Vitamin B12 in the intestines. Without intrinsic factor, Vitamin B12 cannot be effectively absorbed, leading to deficiencies and conditions like megakaryocytic anemia.

4. **Conclusion**:
- Based on the roles of the cells identified, the secretion of intrinsic factor by auxinitic cells is critical for the absorption of Vitamin B12.

### Final Answer:
The secretion of **auxinitic cells** is required for the absorption of Vitamin B12.

---