Human B cell In terms of diagnosis of<unk>  depends upon the following: * Measure serum<unk> globulin levels * B cell count * Family medical history
Humoral immune deficiency
T cell deficiency
IgG deficiency
Inborn errors of immunity
Neutrophil-specific granule deficiency
Inherited disorders of trafficking
Surfactant metabolism dysfunction
Mendelian susceptibility to mycobacterial disease