40.胃腸道基質瘤(GI stromal tumors, GISTs)的細胞來源為何?
(A)smooth muscle cells
(B)interstitial cells of Cajal
(C)neuroendocrine cells
(D)epithelial cells
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統計: A(493), B(2185), C(237), D(283), E(0) #2181814
統計: A(493), B(2185), C(237), D(283), E(0) #2181814
