Trichophyton concentricum causes Malabar itch, a skin infection consisting of an eruption of a number of concentric rings of overlapping scales forming papulosquamous patches.
Nigiri sushi is a type of Japanese dish made with sushi rice and fresh fish. The sushi rice is hand formed into a small clump, and the fish is sliced and pressed on top of it. In some cases, nigiri sushi uses a small strip of toasted seaweed called nori to bind the whole mixture together, although this is not obligatory.
Sashimi: A slice of raw fish or seafood only. The term sushi refers to the presence of the vinegared rice, so sashimi does not technically qualify as such, but you will see it listed alongside the sushi offerings at Japanese restaurants.