The antibiotic which is effective against certain strains of cancer cells

Options

A. dysidazirine
B. sulphanilamide
C. vancomycin
D. ofloxacin.

Explanation

To solve the question regarding the antibiotic effective against certain strains of cancer cells, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for an antibiotic that is effective against certain strains of cancer cells. We need to identify which of the given options is relevant in this context.

2. **Analyzing the Options**:
- **Option A: Dicidazirine**: This is known to have antifungal properties and is used in the treatment of certain fungal infections. It is also noted for its effectiveness against some cancer cells.
- **Option B: Sulfonamide**: This is primarily an antibacterial drug and is not effective against cancer cells.
- **Option C: Vancomycin**: This is another antibacterial drug used to treat serious bacterial infections and does not target cancer cells.
- **Option D: Ofloxacin**: This is also an antibacterial drug and is not used for treating cancer.

3. **Identifying the Correct Answer**: Based on the analysis, Dicidazirine is the only option that is known to be effective against certain strains of cancer cells, while the other options are antibacterial drugs that do not have this capability.

4. **Conclusion**: Therefore, the correct answer to the question is **A: Dicidazirine**.