Outgroup

Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..

The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..

Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..

It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..

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