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[Enterobius vermicularis]

Adults of Enterobius vermicularis in tissue sections stained with hematoxylin and eosin (H&E).

male E. vermicularis, H&E female E. vermicularis, H&E
A B

A:  Cross-section of a male E. vermicularis from tissue, stained with H&E.  Notice the presence of the alae (blue arrow), intestine (red arrow) and testis (black arrow).
B:  Cross-section of an adult female E. vermicularis from the same specimen shown in Figure A.  Note the presence of the alae (blue arrow), intestine (green arrow) and ovaries (black arrows).

female E. vermicularis, H&E female E. vermicularis, H&E
C D

C:  Cross section of an adult female E. vermicularis stained with H&E, recovered during a colonoscopy.  Note the prominent alae (blue arrow) and the presence of eggs (yellow arrow). Image contributed by Sheboygan Memorial Hospital, Wisconsin.
D:  Longitudinal section of an adult female E. vermicularis from the same specimen as Figure C.  Note the presence of many eggs.

female E. vermicularis, H&E E. vermicularis eggs, H&E
E F

E:  Cross-section of an adult female E. vermicularis stained with H&E, taken from a colon biopsy specimen.
F:  Close-up of Figure E, showing several eggs.

 

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