1 янв 1870 г. - Louis Pasteur develops vaccines for diseases.
Описание:
Louis Pasteur, a physician, thought that illness was caused by microorganisms. He used this knowledge to develop vaccines that extended life expectancy by preventing a number of common diseases.Добавлено на ленту времени:
Дата:
1 янв 1870 г.
Сейчас
~ 155 г назад