Primary exposure to antigenic proteins of pathogen results in the production of all except

Options

A. B - cell - antibodies
B. T cell - antibodies
C. B memory cells
D. T memory cells

Answer

To solve the question regarding the primary exposure to antigenic proteins of pathogens and the resulting immune responses, let's break down the concepts step by step.

### Step 1: Understand Primary Exposure
Primary exposure refers to the first time the immune system encounters a specific antigen. When a pathogen enters the body for the first time, the immune system begins to recognize and respond to it.

**Hint:** Think of primary exposure as the immune system's first encounter with a new invader.

### Step 2: Identify Key Immune Cells
The immune system has different types of cells that respond to pathogens:
- **B cells**: These cells are responsible for producing antibodies.
- **T cells**: These cells play various roles, including helping B cells and directly killing infected cells.

**Hint:** Remember that B cells are primarily involved in antibody production, while T cells have a broader range of functions.

### Step 3: Understand Antibodies
Antibodies are proteins produced by B cells that specifically bind to antigens. They help neutralize or eliminate pathogens.

**Hint:** Antibodies are like specialized weapons that target specific invaders.

### Step 4: Memory Cells
After the primary exposure, the immune system creates memory cells:
- **B-memory cells**: These cells remember the specific antigen and can quickly produce antibodies if the same pathogen invades again.
- **T-memory cells**: Similar to B-memory cells, these cells remember the pathogen and can mount a rapid response upon re-exposure.

**Hint:** Memory cells are crucial for long-term immunity, allowing for a faster response to previously encountered pathogens.

### Step 5: Analyze the Options
Now, let's evaluate the options given in the question:
1. **B-cell antibodies**: Produced during primary exposure.
2. **T-cell antibodies**: T cells do not produce antibodies; they have different functions.
3. **B-memory cells**: Produced during primary exposure.
4. **T-memory cells**: Produced during primary exposure.

**Hint:** Focus on which option does not align with the function of T cells.

### Conclusion
The correct answer is **T-cell antibodies** because T cells do not produce antibodies; they have other roles in the immune response.

**Final Answer:** T-cell antibodies (Option B).