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.
Urban fiction, also known as street lit is a literary genre set, as the name implies, in a city landscape; however, the genre is as much defined by the socio-economic realities and culture of its characters as the urban setting.The tone for urban fiction is usually dark, focusing on the underside of city living.ontemporary urban fiction was (and largely still is) a genre written by and for African Americans. In his famous essay â The Souls of Black Folk ,â W. E. B. Du Bois discussed how a veil separated the African American community from the outside world.