Immunology testing methods questions & answers

Immunology testing methods questions
& answers

Stokes's Law: ___ properties. - correct Answer-fluid

___ diffusion: both Ag and Ab diffuse independently through a semisolid medium. -
correct Answer-Double

____ method of radial immunodiffusion: Ag is allowed to diffuse to completion. - correct
Answer-Endpoint

Endpoint method of radial immunodiffusion: ___ of the ___ is directly proportional to the
Ag concentration. - correct Answer-square; diameter

Endpoint method of radial immunodiffusion: square of the diameter is ___ proportional
to the Ag concentration. - correct Answer-directly

___: strength of a single Ab-Ag interaction. - correct Answer-affinity

___: sum of the many affinities. - correct Answer-avidity

___: strength of interactions between many different Ab's in a serum against a particular
Ag. - correct Answer-avidity

Pt sample contains a large amoun of Ab, but the reaction in a test system containing Ag
is negative => ____ phenomenon - correct Answer-prozone

___: Ab molecules saturate Ag sites, preventing cross-linking of Ag-Ab complexes. -
correct Answer-prozone

Prozone => false-___ - correct Answer-negative


Fluorescence: emitted light has ___ energy than the absorbed light. - correct Answer-
lower

Fluorescence: emitted light has ___ wavelength than the absorbed light. - correct
Answer-longer

Fluorescent microscope: ___-illumination uses a ___ ___. - correct Answer-epi; dichroic
mirror