What does the differential white blood cell count include when it is ordered with a CBC?

A. it results in permanent loss of function of the involved area: Scar tissue is collagenous and non-functional compared with the original specialized tissue (e.g., myocardial scar after infarct), so the involved area usually has permanent loss of its original function.
B. vital organs do not heal by scar tissue: Many vital organs (heart, kidney, lung) heal by scarring when regeneration is incomplete.
C. it makes the organ larger than it originally was and increases function overall: Scars typically reduce functional tissue and do not increase organ function; any change in size is usually due to remodeling, not improved function.
D. the presence of scar tissue causes pressure necrosis of the surrounding area: Scar tissue may alter mechanics or blood flow, but “pressure necrosis” of surrounding tissue is not a typical direct outcome.

A. hay fever: Hay fever (allergic rhinitis) is a classic Type I (IgE-mediated) hypersensitivity reaction.
B. eczema: Atopic eczema/dermatitis is commonly associated with Type I (IgE-mediated) hypersensitivity in atopic individuals (though it’s multifactorial) - therefore it can be a Type I example.
C. anaphylaxis: Anaphylaxis is the extreme systemic form of Type I hypersensitivity (IgE-mediated).
D. glomerulonephritis: Many forms of glomerulonephritis are immune complex–mediated (Type III) or antibody-mediated (Type II), not Type I IgE-mediated hypersensitivity.