A medical specialty focused on diagnosing, treating, and preventing illnesses caused by harmful germs, such as bacteria, viruses, fungi, and parasites.

The medical specialty concerned with the diagnosis and treatment of kidney diseases and the care of those requiring renal replacement therapy, including patients requiring dialysis and kidney transplant patients.

A medical specialty that uses radiation to treat cancer and other diseases. It involves using high-energy radiation, such as X-ray beams, to damage and destroy cancer cells, or to relieve symptoms caused by cancer.

A medical field that focuses on the urinary system, which includes the kidneys, bladder, ureters and urethra, as well as the male reproductive system.