A Positive Qualitative Serologic
Test for Infectious Mononucleosis
![Photograph of a positive qualitative test for infectious mononucleosis showing clumping of the horse erythrocytes.](images/monopos.jpg)
Clumping of the horse erythrocytes containing Paul-Bunnel antigens in their cell membrane indicates
the person's serum contains heterophile antibodies.
![Creative Commons License](https://i.creativecommons.org/l/by/4.0/88x31.png)
Microbiology Laboratory Manual by Gary E. Kaiser, PhD, Professor of Microbiology
is licensed under a Creative Commons Attribution 4.0 International License.
Last updated: September, 2017