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This animated video shows techniques for breast self-examination and describes some of the abnormalities the may occur during the exam. While this video provides an overview of breast self-examination, ask your doctor to show the proper technique before you adopt the practice at home.

The influenza virus, the pathogen that causes the flu, infect the cells of the respiratory system as shown in this animation. The immune system response to influenza virus infection is also shown.

This video shows the constant battle between the two main cell types in bone, osteoblasts and osteoclasts. Osteoblasts builds bone while osteoclasts dissolve bone for renovation and remodeling. The video explains how these cells influence the strength of bone throughout life.

Mastectomy or breast removal surgery is the most common treatment for certain types of breast cancer. The various types of mastectomy procedures are described including a modified radical mastectomy and lumpectomy in this narrated animation.

This stylized animation shows what a cell might look like at very high magnification. It begins by showing the cell membrane and the proteins that hold the cell together. The video continues to describe the internal workings of a cell. While the narration is very detailed and accurate, this video may use terminology that is advanced for a general audience.

A modified radical mastectomy is a major surgery used to treat breast cancer. This animation shows which anatomical structures are removed during a modified radical mastectomy and how the procedure is different from other forms of mastectomy (breast removal surgery).

The spleen is the largest organ in your immune system and, while useful and important, is not necessary for survival. In certain diseases it is often better for overall health if the spleen is removed in a procedure known as a splenectomy. This narrated video shows where the spleen is located in the body and several of the non-emergent reasons for which the spleen may need to be removed.

The lymphatic system keeps our tissues from retaining fluid and houses many of the key components of the immune system, like lymph nodes. Learn how this underappreciated body system is organized and how it functions.

This narrated animation explains how normal cells sometimes change and turn into cancer cells. It touches on some of the causes and the prevalence of cancer and cancer deaths in the population.

This animation provides a very brief overview of body anatomy, from the entire body down to subcellular organelles.