Author: Study Clue

In PET imaging, a positron emitted from the tracer soon meets an electron and produces a pair of gamma photons

PET uses which event to create detectable gamma signals inside the body A Electron capture only B Proton spin flip

PET scanning is best described as imaging that primarily shows tissue activity rather than only structure A Bone length imaging

PET detects body function mainly by showing where the radiotracer accumulates A Bone density value B Sound echo pattern C

PET scan helps doctors mainly because it shows which body regions are using more energy than normal A Tissue metabolic

A molecule that is strongly antigenic but fails to induce immunity unless paired with adjuvant is best described as having

For T-cell activation, a “professional APC” is important mainly because it provides A Extra oxygen supply B Faster RBC turnover

A “carrier protein” is needed with a hapten mainly to A Reduce antigen size B Destroy antibody chains C Make

When an antigen is called “multivalent,” it mainly means the antigen has A Many nuclei inside B Many lipid layers

In immunology, which term best describes a substance that can be specifically recognized by immune receptors and trigger a response