Metallic stain used by Golgi was

Options

A. Lead acetate
B. Osmium choride and silver salts
C. Phosphotungstate
D. Palladium

Answer

To answer the question about the metallic stain used by Golgi, we can follow these steps:

1. **Identify the Scientist**: Recognize that the question refers to Camillo Golgi, who is known for his work on the structure of the cell, particularly the Golgi apparatus.

2. **Understand the Context**: Golgi discovered the Golgi apparatus while studying nerve cells, specifically in barn owls and cats. This context is important as it relates to the techniques he used.

3. **Recall the Staining Technique**: Golgi used specific metallic stains to visualize the structures within the nerve cells. This is a critical part of his discovery.

4. **List the Options**: The options provided are:
- Lead Acetate
- Osmium Chloride and Silver Salt
- Phospho Tungsten State
- Vanadium

5. **Select the Correct Stain**: From the knowledge of Golgi's work, it is known that he primarily used osmium chloride and silver salts as the metallic stains for his microscopy studies.

6. **Conclude the Answer**: Therefore, the correct answer to the question is "Osmium Chloride and Silver Salt."

### Final Answer:
The metallic stain used by Golgi was Osmium Chloride and Silver Salt.

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