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A disease breaks out among sheep in california. a scientist takes blood from the sheep and grows a previously unknown organism. that organism is then injected into a healthy sheep. the healthy sheep becomes sick with the same symptoms as the original sheep and dies. that sheep's blood is then cultured, and the original organism is isolated. this applies the principles of __________. view available hint(s) a disease breaks out among sheep in california. a scientist takes blood from the sheep and grows a previously unknown organism. that organism is then injected into a healthy sheep. the healthy sheep becomes sick with the same symptoms as the original sheep and dies. that sheep's blood is then cultured, and the original organism is isolated. this applies the principles of __________. spontaneous generation epidemiology vaccination koch's postulates

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danilosanmartin
The correct answer is: "Koch's postulates"

Robert Koch developed a criteria for the causality of disease from microorganisms called the Koch's postulates. The Koch's postulates indicate that:
(1) The bacteria must be present in every case of the disease(2) The bacteria must be extracted and isolated from the host with the disease and should be directly visualized and/or grown in culture(3) There must be a healthy experimental host that will reproduce the disease once the isolated bacteria is injected(4) The bacteria should be recoverable from the previously healthy host