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  2. Rheumatoid factor - Wikipedia

    en.wikipedia.org/wiki/Rheumatoid_factor

    RF is often evaluated in patients suspected of having any form of arthritis, even though positive results can be due to other causes and negative results do not rule out disease. In combination with signs and symptoms, it can play a role in both diagnosis and disease prognosis. It is part of the usual disease criteria of rheumatoid arthritis. [6]

  3. Rh blood group system - Wikipedia

    en.wikipedia.org/wiki/Rh_blood_group_system

    Rh(D) status of an individual is normally described with a positive (+) or negative (−) suffix after the ABO type (e.g., someone who is A+ has the A antigen and Rh(D) antigen, whereas someone who is A− has the A antigen but lacks the Rh(D) antigen). The terms Rh factor, Rh positive, and Rh negative refer to the Rh(D

  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. Gram stain - Wikipedia

    en.wikipedia.org/wiki/Gram_stain

    Gram negative Neisseria gonorrhoeae and pus cells. Gram-negative bacteria generally possess a thin layer of peptidoglycan between two membranes (diderm). [26] Lipopolysaccharide (LPS) is the most abundant antigen on the cell surface of most gram-negative bacteria, contributing up to 80% of the outer membrane of E. coli and Salmonella. [27]

  6. 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 ...

  7. List of Nvidia graphics processing units - Wikipedia

    en.wikipedia.org/wiki/List_of_Nvidia_graphics...

    STG-2000: May 22, 1995: NV1 SGS 500 nm: 1 [3]: 90 PCI 12 75 50 60 1:1:1 12 12 12 0 1 2 4 0.4 0.48 FPM EDO VRAM 64 ? 1.0 n/a Riva 128: August 25, 1997: NV3 SGS 350 nm: 4 [4]: 90 AGP 1x, [5] PCI 100

  8. 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.

  9. APS-C - Wikipedia

    en.wikipedia.org/wiki/APS-C

    Drawing showing the relative sizes of sensors used in most current digital cameras. Advanced Photo System type-C (APS-C) is an image sensor format approximately equivalent in size to the Advanced Photo System film negative in its C ("Classic") format, of 25.1×16.7 mm, an aspect ratio of 3:2 and Ø 30.15 mm field diameter.