Answer
B
Work Step by Step
A direct fluorescent antibody test can be used to detect the presence of specific antigens. During DFA tests, target antigens are illuminated for study or identification.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.