As degranulation occurs, it causes the mast cell or basophil to release a series of chemicals that orchestrate the allergic reaction. Within every mast cell or basophil are 500 to 1500 granules containing more than thirty different allergy-causing chemicals.
Urban design is an inter-disciplinary subject that unites all the built environment professions, including urban planning, landscape architecture, architecture, civil and municipal engineering.
Engineering Design Elective. Engineering design is the process of devising a system, component or process to meet desired needs. It is a decision-making process, often iterative, in which the basic sciences, mathematics and engineering sciences are applied to convert resources optimally to meet a stated objective.