The serum concentration of which of the following human IgG subclass is maximum?
IgG comprises about 75 to 85% of total serum immunoglobulinThe four IgG subclasses are numbered in order of their level in serumIgG1 is found in greatest amounts and IgG4 the least (Ref: Harrison's 18/e p2036)
IgG1
IgG2
IgG3
IgG4
All India exam