Oestrogen works in cancer as :-

Options

A. Tumour promoters
B. Tumour marker
C. Oncogenic transformers
D. All the above

Answer

### Step-by-Step Text Solution:

1. **Understanding Oestrogen**: Oestrogen is a hormone that plays a significant role in various physiological processes in the human body, including the regulation of the menstrual cycle and reproductive system.

2. **Oestrogen and Cancer Cells**: In the context of cancer, particularly certain types of breast and ovarian cancers, oestrogen can interact with cancer cells. These cancer cells have specific receptors that can bind to oestrogen.

3. **Mechanism of Action**: When oestrogen binds to its receptors on cancer cells, it can stimulate the growth and proliferation of these cells. This means that oestrogen can promote the growth of tumors, making it a factor that can exacerbate cancer progression.

4. **Evaluating the Options**:
- **Option 1: Tumor Promoters**: This option is correct because oestrogen promotes the growth of cancer cells.
- **Option 2: Tumor Marker**: This option is incorrect. Tumor markers are substances that can indicate the presence of cancer but do not promote its growth.
- **Option 3: Oncogenic Transformer**: This option is also incorrect. Oncogenic transformers refer to agents that cause cancer, whereas oestrogen does not directly cause cancer but can promote the growth of existing cancer cells.
- **Option 4: All of the Above**: This option is incorrect since not all the previous statements are true.

5. **Conclusion**: Based on the analysis, the correct answer is **Option 1: Tumor Promoters**. Oestrogen acts as a tumor promoter in cancer cells by facilitating their growth.