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The difference between a confined and unconfined aquifer is determined by whether there is solid, impermeable surface beneath the aquifer.
Anabolic Steroids
Synthetic variations of the male sex hormone testosterone, often abused to enhance muscle growth and athletic performance.
Testicular Cells
Cells located within the testes responsible for the production of sperm and testosterone.
Negative Feedback
A mechanism that reverses a deviation from the set point in biological systems, helping to maintain homeostasis.
Anterior Pituitary
The front portion of the pituitary gland, a pea-sized organ at the base of the brain, which produces and releases several hormones that regulate various bodily functions.
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