Glossary |
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P — R
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Peptide
a natural or synthetic compound containing two or more amino acids linked together by peptide bonds.
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Phytoestrogen
plant-made compound that mimics estrogen activity.
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Pituitary Gland
located at the base of the brain.
secretes hormones in response to inputs from the hypothalamus.
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Placebo
a substance that has no chemically relevant effect on a test subject.
often given to members of the control group during experimental
trials that test the effects of a drug or other substance.
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Positive Feedback
regulatory process that increases the output of a system.
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Pulsatile Release
a periodic (non-continuous) release of hormone.
both the amplitude and frequency of pulses are subject to feedback regulation.
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Randomized
not ordered.
a method to reduce bias in experimentation (e.g., a randomized trial).
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Releasing Hormone
a chemical that controls the production and release of other
hormones.
usually refers to hypothalamic hormones that target the pituitary
gland.
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