Name the host cells in which the micro-injection technique is used to introduce an alien DNA.*

Explanation

### Step-by-Step Solution:

1. **Understanding Micro-Injection Technique**: The micro-injection technique is a method used to introduce foreign DNA (alien DNA) directly into the cells. This technique is particularly useful for genetic engineering and research purposes.

2. **Process of Micro-Injection**: In this technique, a fine glass needle is used to inject the alien DNA directly into the nucleus of the host cell. This allows the alien DNA to integrate into the host's genetic material.

3. **Identifying Host Cells**: The question specifically asks for the type of host cells that utilize this technique.

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