37 results found

Search Results for: dye

Neutral dye

Definition noun, plural: neutral dyes (biological techniques) A compound of an acid dye and a basic dye used in staining... Read More

Basic dye

Definition noun, plural: basic dyes (biological techniques) A dye that ionize in solution giving a positively-charged ions... Read More

Acid dye

Definition noun, plural: acid dyes (biological techniques) A dye containing acidic group(s) and is used in staining... Read More

Dye

Dye a stain or colouring matter; a compound consisting of chromophore and auxochrome groups attached to one or more benzene... Read More

Gram staining

Definition noun A staining method performed to determine whether a bacterial species is gram-positive (i.e. violet stain) or... Read More

Differential stain

Definition noun The dye or stain that is used to differentiate one component or cellular structure from another, or to... Read More

Counterstain

Definition noun The dye or stain that is used to differentiate one component or cellular structure from another, or to... Read More

Lac

Lac a resinous substance produced mainly on the banyan tree, but to some extent on other trees, by the coccus lacca, a... Read More

Metachromasia

Definition noun (1) A property of a dye in which the resulting color of the stain is different from the color of the dye... Read More

Vermilion

vermilion 1. (Science: chemistry) A bright red pigment consisting of mercuric sulphide, obtained either from the mineral... Read More

Gram-positive bacilli

Definition noun, singular: gram-positive bacillus A group of rod-shaped bacterial cells that appears violet through Gram's... Read More

Diffusion

Diffusion Definition Diffusion is the net passive movement of molecules or particles from regions of higher to regions of... Read More

Gram-indeterminate bacteria

Definition noun, singular: gram-indeterminate bacterium Bacteria that do not respond to gram staining and, therefore, are... Read More

Giemsa stain

Definition noun A Romanovsky type of stain named after German chemist and bacteriologist Gustav Giemsa, and is often used in... Read More

Hair

Hair 1. The collection or mass of filaments growing from the skin of an animal, and forming a covering for a part of the... Read More

Ct scan

Ct scan --> computed tomography (Science: investigation, procedure, radiology) a special radiographic technique that uses... Read More

Gram-positive cocci

Definition noun, singular: gram-positive coccus A group of spherical bacteria that retains the violet stain following gram... Read More

Elutant

Definition noun, plural: elutants (1) The solution of the eluent and the dye. (2) The eluent that has eluted or passed... Read More

Spongioplasm

Definition noun (1) The network or reticulum formed by the fibrils or granules thinly scattered in the cytoplasm. (2) The... Read More

Gram-positive endospore-forming rods

Definition noun A group of rod-shaped bacteria that are positive to Gram's method and form... Read More

Schiffs reagent

Schiff's reagent An aqueous solution of basic fuchsin or pararosaniline which is decolorised by sulfur dioxide, commonly... Read More

Gram-positive bacteria

Definition noun, singular: gram-positive bacterium A group of bacterial cells that retains the violet colour following ... Read More

Litmus

Litmus (Science: chemistry) a dyestuff extracted from certain lichens (Roccella tinctoria, Lecanora tartarea, etc), as a... Read More

Metachromatic granules

Definition noun (1) Granules within cells of an organism exhibiting metachromasia (2) Cytoplasmic inclusions that occur in... Read More

Quinacrine

quinacrine (Science: chemical) A fluorescent dye that intercalates into dNA helices. Chromosomes stained with quinacrine... Read More

Plaque assay

Definition noun An assay used for virus isolation and purification, and to determine viral titers. Supplement The plaque... Read More

Arthropod

Arthropod Definition What is an arthropod? An arthropod is an invertebrate living organism characterized by the presence of... Read More

Gram-negative

Definition adjective Of, or relating to the group of bacteria that take the color of the counterstain (i.e. pink) under the... Read More

Ripening

ripening Denoting progressive oxidation of dye solutions, as in the ripening of haematoxylin solutions to haematein or of... Read More

Supravital stain

supravital stain (Science: technique) A procedure in which living tissue is removed from the body and cells are placed in a... Read More

Y chromatin

y chromatin Brilliantly fluorescent body seen in cells stained with the dye quinacrine which lights up the y chromosomes... Read More

Flow cytometry

Flow cytometry (Science: technique) flow cytometry is an emerging technique which holds great promise for the separation,... Read More

Gall

Gall 1. To fret and wear away by friction; to hurt or break the skin of by rubbing; to chafe; to injure the surface of by... Read More

Chlorophyll

Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More

Antigen

Antigen Definition What is an antigen? A simple definition is that an antigen refers to any substance that triggers an... Read More

Pigment

pigment 1. Any material from which a dye, a paint, or the like, may be prepared; particularly, the refined and purified... Read More

Neuroanatomist

Definition noun, plural: neuroanatomists An expert or a researcher in the field of neuroanatomy Supplement Neuroanatomists... Read More