Disease Associated with Immune System
A selective IgA deficiency would be expected to result in problems with

bacterial infections
pathogens which can survive inside macrophages
infections following dental work due to bacteria entering the bloodstream
mucosal pathogens

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Disease Associated with Immune System
Chronic granulomatous disease results from a failure to perform oxidative burst. This deficiency would be most likely to interfere with

dendritic cell activation to become a mature APC
infected cell processing of virus peptides
CTL killing of viruses
macrophage intracellular killing of bacteria

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