nigrosine

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Related to Nigrosin: nigrosin stain

ni·gro·sine

 (nī′grə-sēn′, -sĭn)
n.
Any of a class of dyes, varying from blue to black, used in the manufacture of inks and for dyeing wood and textiles.

[Latin niger, nigr-, black; see nekw-t- in Indo-European roots + -os(e) + -ine.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

nigrosine

(ˈnɪɡrəˌsiːn; -sɪn) or

nigrosin

n
(Dyeing) any of a class of black pigments and dyes obtained from aniline: used in inks and shoe polishes and for dyeing textiles
[C19: from Latin niger black + -ose1 + -ine1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ni•gro•sine

(ˈnaɪ grəˌsin, -sɪn)

n.
any of the class of deep blue or black dyes obtained by the oxidation of aniline.
[1890–95; < Latin nigr-, s. of niger black, dark + -ose2 + -ine1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Sperm viability and morphology were evaluated by eosin-nigrosin vital staining (1 % eosin and 5 % nigrosin) using microscope (Olympus BX51) immersion oil at 100X.
Motility was determined under microscope at10x magnification, morphology and live dead ratio was assessed using eosin nigrosin stain under 40x magnification, concentration was calculated by hemocytometer, membrane integrity was examined by HOST solution.
Virulence is due to oxidase, protease enzymes and carbohydrate capsule, which can be demonstrated by negative staining with 10% Nigrosin or India Ink.
The eosin nigrosin staining technique was used to estimate live spermatozoa.
Nigrosin staining (Negative staining) was performed and then characterized as a capsule or clear layer loosely enclosing the cells under light microscopy.
The membrane structural integrity was assessed by staining with eosin nigrosin (E/N), for which 100 spermatozoa were counted in a 400X magnification bright field microscope.
The vitality and morphology of sperm were analyzed using eosin-nigrosin (eosin Y: MERCK, 1.15935.0025) (nigrosin: MERCK, 1.15924.0025) staining technique.
The count of live spermatozoa was determined using eosin-nigrosin stain (5% (w/v) nigrosin water soluble, 0.6% (w/v) eosin yellow water soluble, and 3% sodium citrate dihydrate; filtered and pH adjusted to 7.0 by adding few drops of 0.1 M Na[H.sub.2]P[O.sub.4] or 0.1 M [Na.sub.2]HP[O.sub.4]) according to a previously described method using bright-field optics (Nikon, Eclipse 80i; magnification 1000x) [32].
The count of live spermatozoa was determined using eosin-nigrosin stain 5% (w/v) nigrosin water soluble, 0.6% (w/v) eosin yellow water soluble, and 3% sodium citrate dehydrate, filtered and pH adjusted to 7.0 by adding few drops of 0.1 M Na[H.sub.2]P[O.sub.4] or 0.1 M [Na.sub.2]HP[O.sub.4] according to a previously described method [23] using bright-field optics (Nikon, Eclipse 80i; magnification 1000x).
"His ingenious use of nigrosin dye ensured that our shark repellent was the only product out of 24 to achieve any success in repelling sharks when tested by the US Navy in 1967.