## **Core Concept**
Campylobacter jejuni is a microaerophilic, Gram-negative bacterium commonly causing gastrointestinal infections. The culture medium for Campylobacter jejuni requires specific nutrients and conditions to support its growth.

## **Why the Correct Answer is Right**
The correct answer, **C. Skirrow's medium**, is a selective medium specifically designed for the isolation of Campylobacter species, including C. jejuni. This medium contains antibiotics (like vancomycin, trimethoprim lactate, and polymyxin B) to inhibit the growth of other bacteria and provides the necessary nutrients for Campylobacter growth. The microaerophilic environment, typically created using a candle jar or a microaerobic generator, is crucial for the growth of C. jejuni.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not specify a known medium for Campylobacter jejuni.
- **Option B:** This option is incorrect as it does not correspond to a recognized culture medium for C. jejuni.
- **Option D:** This option is incorrect because it is not a medium specifically used for the isolation of Campylobacter jejuni.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that Campylobacter species, including C. jejuni, require a microaerobic environment for growth, which is typically achieved by using a candle jar or a specialized microaerobic system. This condition is critical for successful isolation of the bacteria from clinical specimens.

## **Correct Answer:** . Skirrow's medium