Which human IgG subclass is found in the highest concentration in serum?
Explanation
Among the four human IgG subclasses, IgG1 is present at the greatest level in the bloodstream, followed by IgG2, IgG3, and IgG4.
Among the four human IgG subclasses, IgG1 is present at the greatest level in the bloodstream, followed by IgG2, IgG3, and IgG4.