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  2. Gelatin - Wikipedia

    en.wikipedia.org/wiki/Gelatin

    [3] [4] It is transparent and brittle, and it can come as sheets, flakes, or as a powder. [3] Polar solvents like hot water, glycerol, and acetic acid can dissolve gelatin, but it is insoluble in organic solvents like alcohol. [3] Gelatin absorbs 5–10 times its weight in water to form a gel. [3]

  3. Formazan - Wikipedia

    en.wikipedia.org/wiki/Formazan

    The formazans are compounds of the general formula [R-N=N-C(R')=N-NH-R"], formally derivatives of formazan [H 2 NN=CHN=NH], unknown in free form. [1]Formazan dyes are artificial chromogenic products obtained by reduction of tetrazolium salts by dehydrogenases and reductases.

  4. 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 ...

  5. Ellman's reagent - Wikipedia

    en.wikipedia.org/wiki/Ellman's_reagent

    This reaction is rapid and stoichiometric, with the addition of one mole of thiol releasing one mole of TNB. The TNB 2− is quantified in a spectrophotometer by measuring the absorbance of visible light at 412 nm, using an extinction coefficient of 14,150 M −1 cm −1 for dilute buffer solutions, [4] [5] and a coefficient of 13,700 M −1 cm −1 for high salt concentrations, such as 6 M ...

  6. N-terminal telopeptide - Wikipedia

    en.wikipedia.org/wiki/N-terminal_telopeptide

    The N-terminal telopeptide (NTX), also known as amino-terminal collagen crosslinks, is the N-terminal telopeptide of fibrillar collagens such as collagen type I and type II. It is used as a biomarker to measure the rate of bone turnover. NTX can be measured in the urine (uNTX) or serum (serum NTX). [1]

  7. Fibrous protein - Wikipedia

    en.wikipedia.org/wiki/Fibrous_protein

    Fibrous proteins are structural or storage proteins that are typically inert and water-insoluble. A fibrous protein occurs as an aggregate due to hydrophobic side chains that protrude from the molecule. A fibrous protein's peptide sequence often has limited residues with repeats; these can form unusual secondary structures, such as a collagen ...

  8. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    For every 3 non-theme words you find, you earn a hint. Hints show the letters of a theme word. If there is already an active hint on the board, a hint will show that word’s letter order.

  9. Spot analysis - Wikipedia

    en.wikipedia.org/wiki/Spot_analysis

    Spot analysis, spot test analysis, or spot test is a chemical test, a simple and efficient technique where analytic assays are executed in only one, or a few drops, of a chemical solution, preferably in a great piece of filter paper, without using any sophisticated instrumentation.