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A counterstain is a stain with colour contrasting to the principal stain, making the stained structure easily visible using a microscope. Examples include the malachite green counterstain to the fuchsine stain in the Gimenez staining technique and the eosin counterstain to haematoxylin in the H&E stain . [ 1 ]
Eosin is most often used as a counterstain to haematoxylin, imparting a pink or red colour to cytoplasmic material, cell membranes, and some extracellular structures. It also imparts a strong red colour to red blood cells. Eosin may also be used as a counterstain in some variants of Gram staining, and in many other protocols.
Counterstain, which is usually positively charged safranin or basic fuchsine, is applied last to give decolorized gram-negative bacteria a pink or red color. [3] [20] Both gram-positive bacteria and gram-negative bacteria pick up the counterstain. The counterstain, however, is unseen on gram-positive bacteria because of the darker crystal ...
The pages in this category are redirects to terms transliterated from the Hindi language. The language code in the |1= parameter below is essential to populate this category. To add a redirect to this category, place {{Rcat shell|{{R to transliteration|1=hi}}}} on the second new line (skip a line) after #REDIRECT [[Target page name]]. For more ...
Hindustani is the lingua franca of northern India and Pakistan, and through its two standardized registers, Hindi and Urdu, a co-official language of India and co-official and national language of Pakistan respectively. Phonological differences between the two standards are minimal.
Safranin is used as a counterstain in some staining protocols, colouring cell nuclei red. This is the classic counterstain in both Gram stains and endospore staining. It can also be used for the detection of cartilage, [2] mucin and mast cell granules. Safranin typically has the chemical structure shown at right (sometimes described as dimethyl ...
Hindustani, the lingua franca of Northern India and Pakistan, has two standardised registers: Hindi and Urdu.Grammatical differences between the two standards are minor but each uses its own script: Hindi uses Devanagari while Urdu uses an extended form of the Perso-Arabic script, typically in the Nastaʿlīq style.
Hindi-Urdu, also known as Hindustani, has three noun cases (nominative, oblique, and vocative) [1] [2] and five pronoun cases (nominative, accusative, dative, genitive, and oblique). The oblique case in pronouns has three subdivisions: Regular, Ergative , and Genitive .