Tag Archives: birds

Bloodletting with leeches: more dangerous than meeting Dracula

Seidumanova Sabrina Nur-Sultan, Kazakhstan   Since time immemorial physicians have treated patients by removing various amounts of blood from the circulatory system. For this purpose they used objects that could cut the skin, such as sharpened pieces of wood, stones, teeth of wild animals, or even the feathers of birds. These tools changed over time, […]