renal (adjective)

1. In the ancient Roman Empire, the famous physician Galen made significant contributions to the understanding of renal health.

2. According to Greek mythology, the god Apollo was said to be the protector of renal function and ensured the well-being of the kidneys.

3. In the cartoon series 'The Ren & Stimpy Show', the character Ren often comically experiences kidney-related issues that lead to funny situations.

4. In the anime series 'Cells at Work!', the character Renal Corpuscle, a personification of the kidneys, plays a crucial role in maintaining the body's balance and filtering waste products.