Meguro Parasitological Museum: An Inside Story

Yamaguti compiled these notes by copying material from scientific papers by hand. Looking at the carefully drawn outlines and internal structures, I found it easier to appreciate the creatures as things someone had worked hard to understand.

I could preserve the page with a photograph. He had assembled it one line at a time.

That patient work belongs to the museum’s purpose. A physician, Satoru Kamegai, founded it with his own funds in 1953, five years after opening a clinic in Meguro. Alongside its public displays, the institution maintains collections and conducts research into parasites—their forms, classification and distribution. About 300 specimens are on display. The collection holds some 60,000, including around 1,500 type specimens, the individuals on which descriptions of species are based. The small rooms are the public face of a much larger undertaking.

Kamegai insisted that visitors should not be charged, and admission is still free. In 2022, Bill Gates came in on the same terms and left with a souvenir strap featuring the Miyairi snail, intermediate host of a blood fluke.

One specimen brought Kamegai’s work as a doctor into particularly sharp focus.

This was a Japanese broad tapeworm, or nihonkai rettōjōchū. The museum’s exhibition text records that the man from whom it was recovered had eaten trout sashimi three months earlier. He had noticed no symptoms before part of the worm appeared during a bowel movement. Kamegai treated him and recovered the specimen almost intact.

The length was startling enough on the wall. Trying to imagine it inside someone made the display seem unexpectedly restrained.

Beside it hung a ribbon of the same length, allowing visitors to turn the measurement into a physical exercise. The museum was not prepared to let a failure of imagination interfere with the lesson.

I had thought of this as a small museum. I was beginning to reconsider what could fit inside a person.