Table 1.

Transgenic/mutant mice used in the studies

Strain name	Strain description
Fcer1g-null	Lack all activating but express inhibitory FcγRIIB
Fcgr2b-null	Lack inhibitory FcγRIIB but express all activating FcγRs
Op/op mice	Devoid of colony stimulating factor 1; are macrophage and microglia deficient
DBA mice	Deficient in complement component C5
B4galnt1-null	Lack beta1,4-N-acetylgalactos-aminyltransferase (GM2/GD2 synthase); express only simple gangliosides GM3 and GD3, but not complex gangliosides GM1, GD1a, GD1b, or GT1b

FcγRs = Fcγ receptors.