An Antigen Is Fixed to a Microscope Slide,then Incubated with Patient

Multiple Choice

An antigen is fixed to a microscope slide,then incubated with patient serum.After washing,fluorescently labeled anti-human immunoglobulin is applied.After an additional wash,the slide is inspected with a fluorescent microscope.This technique is called:

A) direct immunofluorescence.
B) indirect immunofluorescence.
C) fluorescence polarization.
D) autofluorescence.