78. How was Dua's layer found?
(A) By injecting air into the corneas of eyes of patients undergoing corneal grafts and transplants
(B) By examining the many diseases that affect the back of the cornea
(C) By using an electron microscope to scan each separated layer at the back of the cornea
(D) None of the above

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統計： A(28), B(6), C(102), D(11), E(0) #572141

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#2295667
(A) By injecting air...
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#6141128
Dua and his colleagues discovered the new body part by injecting air into the corneas of eyes that had been donated for research and using an electron microscope to scan each separated layer.
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