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Iron gall ink (also known as common ink, standard ink, oak gall ink or iron gall nut ink) is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources. It was the standard ink formulation used in Europe for the 1400-year period between the 5th and 19th centuries, remained in widespread use well into the 20th ...
A Ziehl–Neelsen stain is an acid-fast stain used to stain species of Mycobacterium tuberculosis that do not stain with the standard laboratory staining procedures such as Gram staining. This stain is performed through the use of both red coloured carbol fuchsin that stains the bacteria and a counter stain such as methylene blue .
A "vital dye" or stain is a dye capable of penetrating living cells or tissues without causing immediate visible degenerative changes. [26] Such dyes are useful in medical and pathological fields in order to selectively color certain structures (such as cells) in order to distinguish them from surrounding tissue and thus make them more visible ...
What you should do if the stain persists: Unfortunately, some ink stains on clothing aren’t going to come up. “If the ink has been in the fabric for days or longer there’s a chance that it ...
Removing stains takes a bit of elbow grease, plus one or more of the following best stain removers: Water Your first go-to should always be water as it dilutes stains and helps them fade.
India ink – a type of ink; Ink – a substance used to stain or dye; Ink blotter – a pad used to absorb excess ink; Inkpot – a low-lying bottle used to hold ink; Inkwell – a low-lying bottle used to hold ink; Iron gall ink – a purple-black or brown-black ink made from iron salts and tannic acids
Under the microscope, the India ink stain is used for easy visualization of the capsule in cerebral spinal fluid. [10] The particles of ink pigment do not enter the capsule that surrounds the spherical yeast cell, resulting in a zone of clearance or "halo" around the cells. This allows for quick and easy identification of C. neoformans.
An inoculation loop (also called a smear loop, inoculation wand or microstreaker) is a simple tool used mainly by microbiologists to pick up and transfer a small sample of microorganisms called inoculum from a microbial culture, e.g. for streaking on a culture plate. [1] [2] This process is called inoculation.