MRSA stands for methicillin-resistant Staphylococcus aureus. It is often seen in hospitals or long term care facilities. It can be treated using other antibiotics or is sometimes drained and left to heal without other intervention. 

African Sleeping Sickness, caused by a parasite spread by the Tsetse Fly, has several symptoms that appear about 1-3 weeks after being bitten by the fly. The most common symptoms are fevers, extreme fatigue, muscle aches, irritability, swollen lymph nodes, and severe headaches. 

Africa sleeping sickness, also known as African trypanosomosis, is caused by a parasite. The parasite, Trypanosoma brucei rhodesiense, is carried by the Tsetse fly. The fly bite is the mechanism for the parasite entering the body. There are two variations of sleeping sickness, East African and West African. 

Selectins are most involved in the process of leukocyte rolling—or diapedesis—while ICAMs and integrins are involved in leukocyte firm and CD31 is involved in leukocyte transmigration.

During endothelial cell retraction, gaps form between the cells as their cytoskeletons are rearranged to decrease the cell's area. This is a result of histamine, which causes increased vascular permeability; endothelial cell retraction allows fluids to pass between the cells, contributing to the inflammatory effects of histamine.

An ELISA test would best look at antigens present in serum by using secondary antibodies to bind to antigen-antibody complex and change color, showing if an antigen is present. DNA microarray would just show genes activated. Precipitation and agglutination reactions are not as sensitive as ELISA.

Neutrophils are responsible for destroying bacteria, eosinophils respond to parasitic worms and allergens, lymphocytes destroy cancerous or infected cells, and monocytes phagocytize pathogens and debris.

Mast cell functions in allergic responses by release histamine and other chemicals that promote inflammation. Macrophages are part of the innate immune system and function to engulf and remove debris. Neutrophils are also part of the innate immune system and have macrophagic properties, especially when fighting bacterial infection. Natural killer cells bind to and destroy pathogens without the use of antigens.

Lymphedema (commonly just "edema") is an excessive buildup of fluid in the body's tissues caused by a failure of the lymphatic system to properly balance fluids. The causes vary widely—from poor diet to malignant cancers—and it is usually seen as part of a wider constellation of symptoms. Lymphedema is also a common complication of surgery.

Buerger's disease commonly affects small arteries, veins, and nerves, narrowing the channels through which blood flows and causing ischemia (lack of blood supply) to the extremities. Long associated with tobacco exposure, the disease can cause gangrene and lead to amputation of the fingers, toes, hands and feet its most severe form.