Pure culture of bacteria initial econd“ streak innoculation with clean probe Colonies colonies derived from single cell with clean probe
Pure culture of bacteria
Koch's postulates Diseased althy ani animal Postulate 1 The suspected pathogenic Observe organism should be present Red bloodtissue in all cases of the disease blood under the and absent from healthy cell mIcroscope animals Suspe Red blood cell patho
Koch’s postulates
Kochs postulates organisms present Postulate 2 Streak agar plate with sample The suspected organism from either should be grown in pure diseased or culture healthy animal Colonies of suspected pathogen Inoculate healthy animal with cells uspected pathogen
Koch’s postulates
Koch's postulates Inoculate healthy animal with cells suspected path stulate 3 Cells from a pure culture of the suspected organism should cause disease in a healthy animal Diseased Remove blood or tissue sample and observe by microscopy Postulate 4 The organism should be Laboratory culture reisolated and shown to be the same as the Suspected pathoger Pure culture (must be same orgi as before)
Koch’s postulates
Discovery of Plasmodium malariae o 1880 French doctor charles Laveran found protozoon from the blood of a malaria patient DA in algeria and named it as Plasmodium malariae o 1897 British military doctor Ronald ross discovered the oocyst in stomach of mosquito and approved that malaria is transmitted by mosquito
Discovery of Plasmodium malariae 1880 French doctor Charles Laveran found protozoon from the blood of a malaria patient in Algeria and named it as Plasmodium malariae 1897 British military doctor Ronald Ross discovered the oocyst in stomach of mosquito and approved that malaria is transmitted by mosquito