Which part of the pigment carries oxygen?

Explanation

To answer the question "Which part of the pigment carries oxygen?", we can break down the information provided in the video transcript step by step.

### Step-by-Step Solution:

1. **Understanding Red Blood Cells (RBCs)**:
- Red blood cells (RBCs) are primarily composed of water and a solid component. The solid part is predominantly made up of a red pigment.

2. **Identifying the Red Pigment**:
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