Definition

A substance that triggers the body's immune system to respond, often by producing antibodies.

Example

Vaccines often contain an immunogen to help the body recognize and fight off diseases.

Conversation

Have you heard about that new immunogen they developed for flu vaccines?

Yeah, I read something about it! It sounds promising.

I wonder how effective this new immunogen will be compared to the old ones.

Me too! Hopefully, it will give us better protection this season.

Synonyms & Antonyms

Root Explanation

Immunogen → It is formed from "immunis" (from Latin, meaning exempt or free from) and "-gen" (from Greek "genes", meaning born of or produced by). The word "immunogen" refers to a substance that produces immunity or an immune response.

Memory Tip

Think of something that is 'producing' ('-gen') immunity or making you 'exempt' ('immunis') from disease.

Visually Confused Words