Which of the following can't be taken as the character/function of the sertoil cell ?

Options

A. Release of ABP
B. Contribute of major part of seman
C. Nourishment to spermatids
D. Formation of blood testes barrier

Answer

To solve the question regarding the functions of Sertoli cells, we will analyze each option provided to determine which one cannot be considered a character or function of Sertoli cells.

### Step-by-Step Solution:

1. **Understanding Sertoli Cells**:
Sertoli cells are specialized cells located in the seminiferous tubules of the testes. They play a crucial role in spermatogenesis, providing support and nutrition to developing sperm cells.

2. **Evaluating the Options**:
- **Option 1: Release of ATP**:
Sertoli cells do release ATP, which provides energy necessary for the development and maturation of sperm cells. This option is a correct function of Sertoli cells.

- **Option 2: Contribute to major part of semen**:
While Sertoli cells play a role in the development of sperm, they do not contribute significantly to the composition of semen itself. The major components of semen are produced by seminal vesicles and the prostate gland. Therefore, this option is incorrect and cannot be considered a function of Sertoli cells.

- **Option 3: Nourishment to spermatozoa**:
Sertoli cells are known for providing nourishment to spermatozoa during their development. This is a well-established function of Sertoli cells, making this option correct.

- **Option 4: Formation of blood-testis barrier**:
Sertoli cells also form the blood-testis barrier, which protects developing sperm from the immune system and toxins. This is another important function of Sertoli cells, making this option correct.

3. **Conclusion**:
After evaluating all the options, the one that cannot be taken as a character or function of Sertoli cells is **Option 2: Contribute to major part of semen**.

### Final Answer:
The correct answer is **Option 2**.