Case 237. Panel 6: Contamination of non-pathogenic microbes

　 　 　 　
　
A pollen seen in a gynecologic cytology specimen (Papanicolaou).
 　
　 　 　 　

　

 　 A round pollen with a transparent exine is seen as airborne contamination. The cytoplasm (intine) is beautifully stained in orange.