Give appropriate biological / technical terms for the following:
A nutrient whose deficiency causes Pellagra in humans

Explanation

**Step-by-Step Solution:**

1. **Identify the Disease**: The question asks for a nutrient whose deficiency causes Pellagra. Pellagra is a disease characterized by specific symptoms.

2. **Understand the Nutrient**: Pellagra is primarily linked to the deficiency of a specific vitamin.

3. **Determine the Vitamin**: The nutrient responsible for Pellagra is Vitamin B3.

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