55.牙髓內拉士克神經叢(plexus of Raschkow)存於下列何區?
(A)造牙本質母細胞層(Odontoblastic layer)
(B)細胞貧乏區(Cell-free zone of Weil)
(C)細胞豐富區(Cell-rich zone)
(D)髓柱區(Pulp core zone)

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統計: A(11), B(406), C(43), D(9), E(0) #1511650