Worm (Caenorhabditis elegans)

Caenorhabditis elegans, commonly known as C. elegans, is a small, transparent nematode or roundworm used extensively in scientific research. Measuring about 1 millimeter, it has a simple body plan with a nervous system, digestive system, and reproductive organs. Its transparency allows researchers to observe cellular processes in real time. Because its entire genome has been mapped, C. elegans serves as a valuable model for studying development, genetics, and aging, providing insights into human biology and diseases with relative ease and efficiency.