What kind of valves are present in the lymph?

Explanation

### Step-by-Step Solution:

1. **Understanding Lymph**:
- Lymph is a clear fluid that circulates through the lymphatic system, which is a network of vessels and nodes.
- It plays a crucial role in returning excess tissue fluid back to the bloodstream and is involved in immune responses.

2. **Identifying the Components of the Lymphatic System**:
- The lymphatic system consists of lymphatic vessels (or lymph vessels) and lymph nodes.
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