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Misinterpretation of the word kit as referring to a young cat may have led to the use of the term catgut. Perhaps another possible explanation of the name is the combination of the words cattle and gut. B Braun Medical AG, a German manufacturer, first industrialized catgut suture; Catgut is a brand registered of the company.
Catgut (also known as gut) is a type of cord [1] that is prepared from the natural fiber found in the walls of animal intestines. [2] Catgut makers usually use sheep or goat intestines, but occasionally use the intestines of cattle , [ 3 ] hogs , horses , mules , or donkeys . [ 4 ]
The 2nd-century Roman physician Galen described sutures made of surgical gut or catgut. [27] In the 10th century, the catgut suture along with the surgery needle were used in operations by Abulcasis. [28] [29] The gut suture was similar to that of strings for violins, guitars, and tennis racquets and it involved harvesting sheep or cow ...
Round-bottom flasks (also called round-bottomed flasks or RB flasks) are types of flasks having spherical bottoms used as laboratory glassware, mostly for chemical or biochemical work. [1] They are typically made of glass for chemical inertness ; and in modern days, they are usually made of heat-resistant borosilicate glass.
The most common applications are in the making of pottery, glass, and some types of food, but there are many others, such as the vitrification of an antifreeze-like liquid in cryopreservation. In a different sense of the word, the embedding of material inside a glassy matrix is also called vitrification. An important application is the ...
Feathering – creating feather-like patterns on a glass by dragging a metal tool across the surface of a newly applied wrap. Frit – crushed glass often melted onto other glass to produce patterns and color; Incalmo – the grafting or joining together, while still hot, of two separately blown glass [bubbles] to produce a single [bubble]. [4]
A fill line on a German wine glass Germany has had a number of weights and measures acts specifically addressing volumetric markings on glassware. Local and state laws have since been superseded by the federal Mess- und Eichgesetz [ de ] ("Measurement and Calibration Act"), which in turn was updated to implement the EU directive.
[8] [9] The item is also generically called cell culture bottle [4] or tissue culture (TC) bottle, [8] and flask may be used instead of "bottle". [3] Pile of Roux bottles with culture medium. A Roux bottle provides a large surface for the cells or microorganisms to grow, whether on the top of, [10] floating in, [11] or at the bottom of the ...