Hi Susuji,

I really don't know. In a couple of the images, the structures look rather like nematode larvae (although collapsed). There seems to be a cuticle and a dark-staining organ inside that. But the magnification might not be great enough to see the typical nematode cuticle structure. So I am uncertain.

David

molecular technique can help

Dear Susiji,

In my opinion this structures looks like tapeworm hooks. It may be cross-section of cysticercus. Hooks shape and dimensions might be useful in genus identification.

Best regards

I can't see the images clearly, but without taking the scale/magnification into account, agree with Jerzy that the structures are reminiscent of tapeworm hooks.

P.S.: However, the stained appearance makes the tapeworm hook concept uncertain.