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发表于 14-9-2008 10:47 AM
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基本上,癌症是因为 the counterbalance of the rate of growth n the rate of die of cells is lost.
肿瘤(tumour)则可分成两种即良性(benign)和恶性(malignant).Different types of tumour have different characteristic to distinguish it such as, cell differentiation, rate of growth, exophytic or endophytic, nuclei chromatism and others.
癌症的形成则和oncogene, proto-oncogene and anti-oncogene 有关。
癌症形成(carcinogenesis)可分为三个步骤: initiation, promotion and progression.
而导致癌症的原因大多是 smoking, radiation exposed, occupational exposed,stress 等等。。。。 |
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