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Preneoplastic cells are...

Preneoplastic cells are

A

precancerous cells

B

neoplasitc cells

C

premalignant cells without genetic changes in protooncogenes

D

normal cells

Text Solution

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The correct Answer is:
To answer the question "Preneoplastic cells are," we will analyze the options provided and understand the concept of preneoplastic cells in the context of cancer development. ### Step-by-Step Solution: 1. **Understanding Preneoplastic Cells**: - Preneoplastic cells are abnormal cells that have undergone changes due to the influence of carcinogens but have not yet developed into cancerous (malignant) cells. They are in a transitional stage. 2. **Identifying the Options**: - The options given are: 1. Pre-cancerous cells 2. Neoplastic cells 3. Pre-malignant cells without genetic changes in proto-oncogenes 4. Normal cells 3. **Analyzing Each Option**: - **Option 1: Pre-cancerous cells**: This term is often used interchangeably with preneoplastic cells, as they both refer to cells that have the potential to become cancerous. - **Option 2: Neoplastic cells**: Neoplastic cells are already cancerous cells, which is a stage beyond preneoplastic cells. Therefore, this option is incorrect. - **Option 3: Pre-malignant cells without genetic changes in proto-oncogenes**: Preneoplastic cells can be considered pre-malignant, and they typically exist before significant genetic changes occur. This option seems plausible. - **Option 4: Normal cells**: Normal cells have not undergone any changes that would predispose them to cancer, so this option is incorrect. 4. **Conclusion**: - Based on the analysis, the best option that describes preneoplastic cells is **Option 3: Pre-malignant cells without genetic changes in proto-oncogenes**. This reflects the stage of cells that are not yet fully transformed into cancerous cells. ### Final Answer: Preneoplastic cells are **pre-malignant cells without genetic changes in proto-oncogenes**. ---
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