A Substance-Usually a Protein-That the Body Recognizes as a Foreign

question 29

Multiple Choice

A substance-usually a protein-that the body recognizes as a foreign invader,triggering an immune response is an

• A) antibody.
• B) antigen.
• C) antihistamine.
• D) antibiotic.

---

Definitions:

CSS

Cascading Style Sheets, a stylesheet language used to describe the presentation of a document written in HTML or XML, controlling layout, colors, and fonts among other aspects.

HTTP

Hypertext Transfer Protocol, the foundation of data communication for the World Wide Web.

Level 2 Headings

In a document or website, a subheading that is subordinate to the top-level heading (Level 1 Heading), used for organizing content into sections.

Plugin

A software component that adds a specific feature to an existing computer program, enabling customization or new functionality.