An abnormally high accumulation of body fat which can have a negative effect on health.

A gene that normally directs cell growth. If mutated, an oncogene acts like a car accelerator stuck on drive, leading to uncontrolled cell growth, and cancer. 

The practice of providing unrestricted and free access to the results of research, often via the internet.

A collection of cells and tissues that perform a specific function in the body.

A functional structure found within eukaryotic cells. Organelles carry out functions such as making proteins, processing chemicals and generating energy for the cell.

Reproductive gland in which the female reproductive cells, eggs, are produced.