The mast cells create this reaction by releasing chemicals, called chemotactic factors, that then attract many other inflammatory cells to the site. These cells include: eosinophils, neutrophils, and lymphocytes. Once theyâve arrived, each one of these cells contributes to the late phase of the allergic response. Eosinophils generate chemicals similar to those made by mast cells, as well as release more generally toxic substances that irritate the body.
20 Important Characteristics of Urban Community | Sociology. A sociological analysis of urban community contains several salient features. As a rule, in the same country and at the same period, the size of an urban community is much larger than that of a rural community. In other words, urbanity and size of a community are positively correlated. Image Courtesy : upload.wikimedia.org/wikipedia/commons/0/08/Ginza_area_at_Tower.jpg.
Manhattan is an example of an urban environment. Manhattan is an example of an urban environment. The definition of urban is relating to a city or of a city with a population of at least 50,000 people. An example of urban is the nature of Manhattan. 1  of, in, constituting, or comprising a city or town.