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Hitman42 [59]
3 years ago
5

The first antibody class to appear in the serum in response to a newly encountered pathogen is ________.

Biology
1 answer:
GalinKa [24]3 years ago
3 0

Answer:

IgM

Explanation:

The first molecular mechanism of adptative immunity to appear is IgM. These molecular pentameric (constituted of 5 smaller units), are produced in the macrophages of the organism and are released when some time has elapsed since the beginning of the infection (latency period). By having 5 possible epitopes, it increases the chances of triggering a cell-mediated immune response and stimulating the production of IgG.

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I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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