BRAINCAKEPregnancy Testing
Once the human embryo has been fertilised, it becomes implanted into the uterus. At this stage the embryo secretes a hormone called human chorionic gonadotrophin (hCG). hCG is a small glycoprotein of molecular mass 36,700 and can be found in the urine a few days after conception.
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Key terms in this lesson
- hormone
- A chemical messenger, secreted by an endocrine gland directly into the blood, that travels to target cells bearing complementary receptors and brings about a response.
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