4.牙髓組織是從胚胎的何種結構發育來的?
(A)牙乳頭(Dental papilla)
(B)齒囊(Dental sac)
(C)星形網狀細胞層(Stellate reticulum)
(D)頸板(Cervical lamina)
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統計: A(81), B(5), C(5), D(0), E(0) #1451838
統計: A(81), B(5), C(5), D(0), E(0) #1451838