1 янв 1775 г. - Anesthesia
Описание:
Discovered in 1775, Ether was used through the 19th century. With germ theory not becoming popular until the 20th century, surgeons began operating more and on risker patients. Led to massive influx of post-surgery infections.Добавлено на ленту времени:
Дата:
1 янв 1775 г.
Сейчас
~ 250 г назад