Sometimes it’s easy to tell if something is living or not. A teddy bear might look like a bear, but it cannot do any of the seven things it needs to be able to do to count as being alive.

The biological factory that produces reproductive cells has a robust quality control system to identify and eliminate eggs with chromosomal abnormalities. For years, cell biologists have sought to ...

Reproductive system Bring about fertilisation to produce new offspring. Skeletal system Bring about movement. Support and protect internal structures. Produce blood cells. Store and release calcium.

Female: At 20 weeks, a female fetus has a fully developed reproductive system, replete with six to ... which are hollow balls of cells, each with an immature egg (or ovum) in the center.

Our cells constantly receive DNA damage from factors such as ultraviolet rays, irradiations, toxins and chemicals. For women, ...

Hormones are chemicals that send information between cells and organs to control ... communicating between the brain and the reproductive system. The birth control pill jumps into this relay ...

Reproductive biology involves the scientific study of the reproductive system. Improved understanding of reproductive biology can lead to new treatments for reproductive disorders, such as ...

The articles in this special issue highlight the diversity and complexity of research into reproductive health, including the need for a better understanding of the fundamental biology of reproduction ...

Testicular cancer is when abnormal cells in a testicle start to divide and grow in an uncontrolled way. The testicles are part of the male reproductive system. Testicular cancer is when abnormal cells ...