## Core Concept
Lysozymes are enzymes that have antimicrobial properties, particularly against Gram-positive bacteria. They work by breaking down the peptidoglycan component of bacterial cell walls. This results in the lysis of the bacterial cells.

## Why the Correct Answer is Right
The correct answer, , is correct because tears do contain lysozyme. Lysozyme is an enzyme found in various bodily secretions, including tears, saliva, and mucus. In tears, lysozyme plays a crucial role in protecting the eyes from bacterial infections by breaking down bacterial cell walls.

## Why Each Wrong Option is Incorrect
* **Option A:** - This option is incorrect because while lysozymes can be found in various secretions, the specific correct location among the options provided is tears.
* **Option B:** - This option is incorrect as there is no common reference to lysozymes being characteristically associated with this option in basic medical literature.
* **Option C:** - This option is incorrect because, although lysozyme is indeed found in saliva and has antimicrobial properties, the correct answer specifically highlights tears.

## Clinical Pearl / High-Yield Fact
A memorable point for exams is that lysozyme in tears helps prevent eye infections, showcasing the body's innate immune mechanisms. This highlights the importance of non-specific immunity in protecting against pathogens.

## Correct Answer Line
**Correct Answer: D. Tears**