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.
The word nigiri literally means grasped or squeezed--the rice is molded into a shape and then fish is placed on top, often held together with seaweed. Nigiri-style became popular in the early 19th century in Japan, when street vendors were a big part of the food industry.