Name the scientists who discovered:
Endoplasmic reticulum

Explanation

To answer the question about the scientists who discovered the endoplasmic reticulum, follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept**: The endoplasmic reticulum (ER) is a cell organelle that is involved in the synthesis of proteins and lipids, and it is found in the cytoplasm of eukaryotic cells.

2. **Identify the Discoverers**: The endoplasmic reticulum was discovered by two scientists, Porter and Thompson.

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