4.根尖周圍炎可以由外因性(exogenous)和內因性因子(endogenous factors)所導致,下列何者為 內因性因子?
(A)化學劑(chemical agents)
(B)膽固醇晶體(cholesterol crystals)
(C)微生物及其毒素(microbes and their toxins)
(D)異物(foreign bodies)
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統計: A(2), B(86), C(18), D(1), E(0) #3490292
統計: A(2), B(86), C(18), D(1), E(0) #3490292