Match the antibody isotype with its functional characteristics. Highly effective at activating complement, too large to get to infected tissues Crosses cells, including the placenta, neutralizes toxins Dimeric form crosses the intestinal epithelia using PlgR Crosslinking on the surface of the mast cell leads to degranulation and release of histamine Although the exact function of this isotype is unknown, we know it does NOT fix complement ✓Choose... IgD IgM IgG IgA IgE Choose...

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