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The kingdom of Axum, the modern-day Ethiopia, was unusual in Africa, in that its people
Acrosome
A vesicle at the tip of a sperm cell containing enzymes that help the sperm penetrate the egg.
Umbilical Cord
A flexible cordlike structure containing blood vessels and attaching a human or other mammalian fetus to the placenta during gestation.
DNA
Deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the carrier of genetic information.
Three Stages of Birth
The labor process divided into three parts: dilation of the cervix, delivery of the baby, and delivery of the placenta.
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