48.Tomes' process於牙釉質形成(amelogenesis)中的那一階段開始出現?
(A)presecretory stage中的morphogenetic phase
(B)presecretory stage中的differentiation phase
(C)secretory stage
(D)maturation stage
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統計: A(46), B(321), C(65), D(2), E(0) #3489916
統計: A(46), B(321), C(65), D(2), E(0) #3489916