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wyatt7799 wyatt7799
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6 years ago
Edward Jenner's hypothesis that an attack of cowpox confers immunity to smallpox
 
  a. was initially plausible, given what was know about dairy workers who hadcontracted cowpox.
 b. could be tested experimentally.
  c. was a causal hypothesis.
  d. All of these choices.
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nina o.nina o.
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6 years ago
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wyatt7799 Author
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6 years ago
Correct Slight Smile TY
bkrandy
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Yesterday
Brilliant ツ
spaghetti
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2 hours ago
this is exactly what I needed
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