A Reference Method Is

question 12

Multiple Choice

A reference method is:

• A)the most commonly used method.
• B)the scientifically most accurate method.
• C)a method that can be used for qualitative screening only.
• D)a method that has demonstrated similar but slightly less accuracy than a definitive method.

---

Definitions:

Macrophages

Large phagocytic cells found in essentially all tissues, responsible for consuming pathogens and dead or damaged cells.

Dendritic Cells

Immune cells that present antigens to T cells, initiating an adaptive immune response.

Secondary Lymphatic Organ

Sites where immune responses are organized, including lymph nodes, spleen, and tonsils, which filter lymph or blood and house mature lymphocytes.

Spleen

An organ adjacent to the stomach that filters blood, disposes of worn-out red blood cells, and helps fight infection.