Which Immunoglobulin May Form Insoluble Aggregates Upon Thawing, Giving a False-Negative

question 24

Multiple Choice

Which immunoglobulin may form insoluble aggregates upon thawing, giving a false-negative result with previously frozen serum samples?

• A)IgG
• B)IgE
• C)IgM
• D)IgA
• E)All of the above are correct.

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Definitions:

Folds

Structures formed by the bending and warping of rock layers due to pressure and heat in the Earth's crust.

Permeable Sandstone

A type of sandstone that allows fluids to pass through it due to spaces between the sand grains, making it important for water and hydrocarbon reservoirs.

Impermeable Shale

A type of shale rock so compact that it does not allow fluids to pass through it, often creating a barrier for groundwater movement.

Iron Ore

Naturally occurring rocks and minerals from which metallic iron can be economically extracted, commonly found as hematite and magnetite.