Properdin factor e
properdin factor E n.
A serum protein required for activation of the third component of complement.
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properdin system n. An alternative system by which, in the absence of antibodies bound to immunoglobulins and components of complement, the immunological cascade occurs, with the activation of critical components of complement aided by the stabilizing properties of properdin.
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noun, Mathematics. 1. a fraction having the numerator less, or lower in degree, than the denominator. proper fraction noun 1. a fraction in which the numerator has a lower absolute value than the denominator, as 1/2 or x/(3 + x²) proper fraction (prŏp’ər) A fraction in which the numerator is less than the denominator, such […]
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noun, Mathematics. 1. eigenfunction.
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adjective 1. adapted or appropriate to the purpose or circumstances; fit; suitable: the proper time to plant strawberries. 2. conforming to established standards of behavior or manners; correct or decorous: a very proper young man. 3. fitting; right: It was only proper to bring a gift. 4. strictly belonging or applicable: the proper place for […]