（六）补体缺陷（表17-17）表17-5补体缺陷注：AD为常染色体显性遗传，AR为常染色体隐性遗传，XL为X-连锁遗传广义的补体系统涉及一组血浆蛋白质，由两部分组成：①补体各活性成分C1～C9，B因子和甘露糖结合素（mannosebindinglectin，MBL）；②补体调节蛋白，C1抑制物，C4结合蛋白，D因子，I因子，备解素，H因子，腐败加速因子（decayacceleratingfactor，DAF，CD55）和保护因子（protectin，CD59）。
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