A research team from the University of Tokyo in Japan reported that they have developed a thin rope-like body tissue with a diameter of only about 0.1 mm but a length of more than 1 meter. This result is expected to be used in the field of transplantation medicine.
Researchers from the Institute of Production Technology at the University of Tokyo filled a gel-like thin tube with a solution mixed with experimental rat nerve cells, collagen and other substances. After a week or two of cultivation, the cells began to proliferate and reached a certain stage of research When the personnel separates the outer thin tube, a tissue with a high cell density and not easily broken is formed.
The researchers made the islet cells into string-shaped tissues and then transplanted them into the kidneys of the experimental mice with diabetes. After two or three days, the blood glucose levels of the experimental mice returned to normal.
Researchers believe that the use of this technology to obtain blood vessels, muscles, nerves and other string-like tissues is expected to become the basic technology for artificially manufacturing various tissues, and also provides a method for building complex three-dimensional tissues.
Office filing cabinets are made of sheet metal and wood. The drawers usually use a drawer slide to facilitate opening the drawer which includes an "outstop" to prevent the drawer from being pulled completely out of the cabinet. To open a drawer on most metal filing cabinets, a small sliding mechanism known as a "thumblatch" must be pressed to release and open the drawer. Each drawer has a handle to grip and pull the drawer with. On the front face of each drawer, there is usually a label holder to allow the user to identify the contents of the drawer. Many file cabinets incorporate a keyed lock to prevent unauthorized access to the documents being stored. There are two types of locks. A "cam lock" is activated with a key that rotates the lock. A "plunger lock" is opened with a key but can be closed by merely depressing the body of the lock. The plunger lock allows a user to quickly close and lock several cabinets in a short amount of time. Some file cabinets have a metal plate or wire structure at the back of each drawer which is known as a follower block. The follower block can be adjusted forward to reduce the length of the drawer so that the file folders contained within remain upright and at the front of the drawer for easier access.
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