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  2. YouTube VR - Wikipedia

    en.wikipedia.org/wiki/YouTube_VR

    In November 2018, YouTube VR was released on the Oculus Store for the Oculus Go headset. [10] YouTube VR was updated since for compatibility with successive Quest devices, and was ported to Pico 4. [11] Starting with the Oculus Quest, the app was updated for compatibility with mixed-reality passthrough modes on VR headsets.

  3. List of reagent testing color charts - Wikipedia

    en.wikipedia.org/wiki/List_of_reagent_testing...

    Reagent test Alcohols: Forms Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. Alkaloids: Forms Froehde Liebermann Mandelin Marquis Mayer's Mecke Simon's: Amines, and amino acids: Forms Folin's: Barbiturates: Class Dille–Koppanyi Zwikker: Benzodiazepines: Class Zimmermann: Phytocannabinoids ...

  4. Template:Table of blood sampling tubes - Wikipedia

    en.wikipedia.org/wiki/Template:Table_of_blood...

    Tube must be filled to the proper line. Plain red No additive: Serum: Total complement activity, cryoglobulins: Gold (sometimes red and grey "tiger top" [3]) Clot activator and serum separating gel [4] Serum-separating tube (SST): Tube inversions promote clotting. Most chemistry, endocrine and serology tests, including hepatitis and HIV. Orange

  5. Lowry protein assay - Wikipedia

    en.wikipedia.org/wiki/Lowry_protein_assay

    The total protein concentration is exhibited by a color change of the sample solution in proportion to protein concentration, which can then be measured using colorimetric techniques. It is named for the biochemist Oliver H. Lowry who developed the reagent in the 1940s. His 1951 paper describing the technique is the most-highly cited paper ever ...

  6. Nessler cylinder - Wikipedia

    en.wikipedia.org/wiki/Nessler_cylinder

    The tubes often carry out a series of calibrations of solutions of increasing concentrations, which functions as a comparative scale. To minimize differences in the subjective impression of the color of the solution of the substance to be analyzed, cylinders of a series should have the same characteristics - height, diameter, and thickness of ...

  7. C-peptide - Wikipedia

    en.wikipedia.org/wiki/C-peptide

    The connecting peptide, or C-peptide, is a short 31-amino-acid polypeptide that connects insulin's A-chain to its B-chain in the proinsulin molecule. In the context of diabetes or hypoglycemia, a measurement of C-peptide blood serum levels can be used to distinguish between different conditions with similar clinical features.

  8. Bradford protein assay - Wikipedia

    en.wikipedia.org/wiki/Bradford_protein_assay

    It is done in one step where the Bradford reagent is added to a test tube along with the sample. After mixing well, the mixture almost immediately changes to a blue color. When the dye binds to the proteins through a process that takes about 2 minutes, a change in the absorption maximum of the dye from 465 nm to 595 nm in acidic solutions ...

  9. C-terminal telopeptide - Wikipedia

    en.wikipedia.org/wiki/C-terminal_telopeptide

    The CTX test measures for the presence and concentration of a crosslink peptide sequence of type I collagen, found, among other tissues, in bone. This specific peptide sequence relates to bone turnover because it is the portion that is cleaved by osteoclasts during bone resorption, and its serum levels are therefore proportional to osteoclastic ...