When an allergic individual is exposed to a sensitizing allergen, the body makes a specific IgE, one that is able to recognize only that allergen. (see above chart). Millions of mast cells and basophils are all over the body.
Urban morphology is the study of the form of human settlements and the process of their formation and transformation. The study seeks to understand the spatial structure and character of a metropolitan area, city, town or village by examining the patterns of its component parts and the process of its development.
What is an Urban Planner? Urban planning is the planning of land use in cities. Urban planning determines how to make the best use of available space. It involves creating land use plans as well as reviewing, approving, modifying, and sometimes rejecting the plans of developers. Urban and city planners specialize in land use.