Write the effect of the high concentration of L.H. on a mature Graafian follicle.

Explanation

### Step-by-Step Solution:

1. **Understanding Luteinizing Hormone (LH)**:
- Luteinizing hormone (LH) is a hormone produced by the anterior pituitary gland. It plays a crucial role in regulating the reproductive system.

2. **Role of LH in the Menstrual Cycle**:
- During the menstrual cycle, LH levels fluctuate. A surge in LH concentration is particularly important for ovulation.

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