| Type | MGI:General | Description | moderately elevated in serum at 8 weeks relative to controls (1.6ug/ml vs 1ug/ml) considerably elevated in serum at 8 months relative to controls (6.6ug/ml vs 1.7ug/ml) IgE titers increase more rapidly after booster injections with T-cell dependent antigen, especially after a second booster |