Given below is an example of certain structures and their special functional activities.
For example : Eye and vision, On a similar pattern complete the following:
Neutrophils :.....................

Explanation

**Step-by-Step Solution:**

1. **Identify the Structure:** The structure given is "Neutrophils." Neutrophils are a type of white blood cell (WBC) that play a crucial role in the immune response.

2. **Determine the Function:** The primary function of neutrophils is to protect the body against infections. They are particularly important in fighting off bacterial infections.

3. **Define the Special Activity:** The special functional activity of neutrophils is "phagocytosis." This is the process by which neutrophils engulf and digest foreign particles, such as bacteria and dead cells.

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