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  2. Rh blood group system - Wikipedia

    en.wikipedia.org/wiki/Rh_blood_group_system

    Thus, notwithstanding it is a misnomer, the term survives (e.g., rhesus blood group system and the obsolete terms rhesus factor, rhesus positive, and rhesus negative – all three of which actually refer specifically and only to the Rh D factor and are thus misleading when unmodified). Contemporary practice is to use "Rh" as a term of art ...

  3. Immune system - Wikipedia

    en.wikipedia.org/wiki/Immune_system

    If a pathogen breaches these barriers, the innate immune system provides an immediate, but non-specific response. Innate immune systems are found in all animals . [ 2 ] If pathogens successfully evade the innate response, vertebrates possess a second layer of protection, the adaptive immune system , which is activated by the innate response. [ 3 ]

  4. Pearson correlation coefficient - Wikipedia

    en.wikipedia.org/wiki/Pearson_correlation...

    Pearson's correlation coefficient is the covariance of the two variables divided by the product of their standard deviations. The form of the definition involves a "product moment", that is, the mean (the first moment about the origin) of the product of the mean-adjusted random variables; hence the modifier product-moment in the name.

  5. Allostasis - Wikipedia

    en.wikipedia.org/wiki/Allostasis

    Allostasis (/ˌɑːloʊˈsteɪsɪs/) is a physiological mechanism of regulation in which an organism anticipates and adjusts its energy use according to environmental demands.

  6. Vaccine - Wikipedia

    en.wikipedia.org/wiki/Vaccine

    Host-related lack of response occurs in an estimated 2-10% of individuals, due to factors including genetics, immune status, age, health and nutritional status. [26] One type of primary immunodeficiency disorder resulting in genetic failure is X-linked agammaglobulinemia , in which the absence of an enzyme essential for B cell development ...

  7. Rate-determining step - Wikipedia

    en.wikipedia.org/wiki/Rate-determining_step

    As an example, consider the gas-phase reaction NO 2 + CO → NO + CO 2.If this reaction occurred in a single step, its reaction rate (r) would be proportional to the rate of collisions between NO 2 and CO molecules: r = k[NO 2][CO], where k is the reaction rate constant, and square brackets indicate a molar concentration.

  8. Intrinsic factor - Wikipedia

    en.wikipedia.org/wiki/Intrinsic_factor

    14603 Ensembl ENSG00000134812 ENSMUSG00000024682 UniProt P27352 P52787 RefSeq (mRNA) NM_005142 NM_008118 RefSeq (protein) NP_005133 NP_032144 Location (UCSC) Chr 11: 59.83 – 59.85 Mb Chr 19: 11.72 – 11.74 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Intrinsic factor (IF), cobalamin binding intrinsic factor, also known as gastric intrinsic factor (GIF), is a glycoprotein ...

  9. Annual effective discount rate - Wikipedia

    en.wikipedia.org/wiki/Annual_effective_discount_rate

    The annual effective discount rate expresses the amount of interest paid or earned as a percentage of the balance at the end of the annual period. It is related to but slightly smaller than the effective rate of interest, which expresses the amount of interest as a percentage of the balance at the start of the period.