Diptherioids

Definition

Diphtheroids are a group of non-pathogenic bacteria resembling Corynebacterium diphtheriae. They are part of the normal microbiota in various body sites, including the digestive tract.

5 Must Know Facts For Your Next Test

1. Diphtheroids are commonly found in the human digestive system and play a role in maintaining microbial balance.
2. Although they resemble pathogenic species, diphtheroids are generally non-pathogenic and do not cause disease.
3. They can sometimes be mistaken for Corynebacterium diphtheriae in laboratory settings due to their similar morphology.
4. Diphtheroids contribute to the prevention of colonization by harmful pathogens in the digestive system.
5. They are Gram-positive rods, often appearing club-shaped or irregular under microscopic examination.

Review Questions

Related terms

Corynebacterium_diphtheriae: A pathogenic bacterium that causes diphtheria.

Normal_microbiota: The community of microorganisms regularly found at any anatomical site.

Gram-positive_bacteria: Bacteria that retain the crystal violet stain used in the Gram staining method.