Concept
Exotoxin vs endotoxin
Protein toxin versus LPS lipid A concept
EK-soh-tok-sin EN-doh-tok-sin
High-yield clue
Exotoxins are specific protein toxins; endotoxin is LPS lipid A vocabulary.
Overview
A virulence comparison used to separate secreted protein toxins from Gram-negative LPS lipid A inflammatory vocabulary.
Classification
- Virulence concept
- Toxin comparison
Lab & identification clues
- Toxoid vaccine concept for some exotoxins
- LAL/endotoxin testing vocabulary
- Cytokine/inflammation terms
Associations
- Corynebacterium diphtheriae
- Vibrio cholerae
- Gram-negative sepsis vocabulary
Commonly confused with
- Capsule
- Biofilm
- Endospore
Your notes
Original microbiology concept summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC/WHO topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment selection, infection-control instructions, or specimen-handling guidance.