Bacterial quantification was performed in how many representative mucosal fields per section?

• A. 5
• B. 15
• C. 10
• D. 20

Answer: (C)

Estimating bacterial load in tissue hinges on sampling enough microscopic fields to capture variation across the mucosa. Ten representative mucosal fields per section provides a good balance between precision and practicality. With too few fields, such as five, sampling error becomes larger and the estimate may miss regions with higher or lower bacterial density. Taking more fields, like fifteen or twenty, increases workload with diminishing returns because once you’ve sampled enough areas, additional fields contribute only marginally to improving accuracy. The key is selecting fields that are truly representative of the entire mucosa—spread across the section, avoiding artifacts or damaged areas, and counted at a consistent magnification and criterion. In this context, ten fields per section is the standard compromise and explains why this number is used.