LABS I.S

Which stain is typically used to identify neutrophils in blood smears?

• Gram stain

• Giemsa stain

• Ziehl-Neelsen stain

• India ink

To assess phagocytosis in vitro, which of the following is required?

• CD4+ T cells

• Latex beads or opsonized bacteria

• RBCs only

• Complement proteins only

A practical test for inflammation in the lab includes measurement of:

• Albumin

• C-reactive protein (CRP)

• Hemoglobin

• Bilirubin

Macrophage activity is typically observed using:

• ELISA

• Flow cytometry

• Slide culture with stained smears

• Western blot

A rapid increase in neutrophils on a differential count suggests:

• Viral infection

• Parasitic infection

• Acute bacterial infection

• Autoimmunity

Which stain is best used for identifying lymphocytes in histological tissue?

• Periodic Acid-Schiff

• Hematoxylin and Eosin (H&E)

• Sudan III

• Wright’s stain

The best method to examine thymic architecture is through:

• Flow cytometry

• Immunohistochemistry

• Microscopy of fixed sections

• Western blot

To differentiate T and B cells in tissue samples, one would use:

• ELISA

• Immunofluorescence microscopy

• Gram staining

• Giemsa staining

The white pulp of the spleen is primarily composed of:

• Platelets

• Red blood cells

• Lymphocytes

• Plasma

In a lymph node biopsy, follicular hyperplasia indicates:

• Anemia

• Immune activation

• Cancer

• Fibrosis