结论：甲胎蛋白是促进某些新生细胞或肿瘤细胞增殖的内源性物质。
Conclusion: AFP could be an endogenous substance which can enhance the proliferation of some neoplastic or tumor cells.
细菌素是由细菌产生的对同种间的其它菌系或近缘细菌有杀伤作用的非增殖性的蛋白质性物质。
Bacteriocins are irreproductive proteins which are produced by bacteria themselves and could kill the others within the same species and closely relative bacteria.
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