By the middle of the 19th century, the theory of biogenesis had accumulated so much evidential support, due to the work of Pasteur and others, that the alternative theory of spontaneous generation had been effectively disproven.
Do sredine 19. stoljeća teorija biogeneze je nakupila toliko potpore dokazima zahvaljujući radu Pasteura i drugih, da je teorija spontane generacije bila uspješno pobijena.