The following are additional Purdue OWL resources to help you write your cover letter: 1  Cover Letter Workshop- Formatting and Organization. 2  Example Employment Documents. 3  Cover Letters 1: Quick Tips. 4  Cover Letters 2: Preparing to Write a Cover Letter. 5  Cover Letter Presentation. 6  Job Search Documents for Working Class Positions.
1 IgG deficiency with hyper-IgM is a disease that results when the B-cell fails to switch from making IgM to IgG. 2  This produces an increase in the amount of IgM antibodies present and a decrease in the amount of IgG antibodies. 3  This disease is the result of a genetic mutation.
IgG is the only immunoglobulin that can pass through the placenta. The mother's IgG antibodies provide protection to the fetus during pregnancy and to the baby during its first few months of life. There are four subclasses of IgG: IgG 1, IgG 2, IgG 3, and IgG 4.