One of the Important Agents of the Immune System Is

question 95

Multiple Choice

One of the important agents of the immune system is

• A) serotonin.
• B) the heart.
• C) the adrenal gland.
• D) the macrophage.

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Definitions:

ILSAC

The International Lubricant Standardization and Approval Committee is an organization that defines the performance standards for lubricants, oils, and greases used in vehicles and engines.

API Oil Ratings

Standards set by the American Petroleum Institute to classify the performance and quality level of engine oils.

Severe Service Conditions

Driving conditions that are particularly demanding on a vehicle's systems and components, such as frequent short trips, heavy loads, or extreme temperatures.

ACEA Standards

Standards created by the Association of Constructors of European Automobiles.