Insulin used for diabetes was earlier extracted from

Options

A. Liver of slaughtered cattle and pigs
B. Lungs of slaughtered cattle and pigs
C. Pancreas of slaughtered cattle and pigs
D. Pancreas of mice cattle and pigs

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the source of insulin used for diabetes treatment before modern biotechnological methods were developed.

2. **Historical Context**: In the past, insulin was not synthesized artificially. Instead, it was extracted from animal sources.

3. **Identifying the Animal Sources**: The primary animals from which insulin was extracted were cattle (cows) and pigs.

4. **Source of Insulin**: The specific part of these animals used for insulin extraction is the pancreas. The pancreas contains clusters of cells known as the islets of Langerhans, which are responsible for insulin production.

5. **Conclusion**: Therefore, the correct answer to the question is that insulin was extracted from the pancreas of slaughtered cattle and pigs.

**Final Answer**: Insulin used for diabetes was earlier extracted from the pancreas of slaughtered cattle and pigs.

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