TOPIC: RANDOM MIX
When aspirating a painful, swollen total knee arthroplasty to rule out infection, the fluid analysis reveals a highly positive alpha-defensin biomarker test. What biological process does this specific marker represent?
A
An innate antimicrobial immune response mounted by activated neutrophils
B
A severe foreign-body macrophage reaction to massive polyethylene wear debris
C
A localized hypersensitivity reaction to free cobalt and chromium metal ions
D
The precipitation of calcium pyrophosphate crystals indicating pseudogout