US scientists have successfully cultivated human heart tissue on spinach leaves, and managed to make it beat for up to three weeks.
Bioengineers Glenn Gaudette and Joshua Gershlak at Massachusetts Worcester Polytechnic Institute (WPI) led this research and their findings are valuable to a deadly medical problem: the lack of donor organs.
Scientists have long been trying different methods, such as 3-D printing, to create artificial organs. However, so far none of those methods has been successful.
One of the big problems in engineering heart muscle is getting blood flow to all of the cells.
Instead of creating minuscule blood vessels, researchers turned to the material that evolves in nature: spinach leaves, which have vessels that are similar to the blood vessels in a human heart.
They used detergent to wash away spinach cells. Cellulose, which is compatible to mammal cells, and intact leaf veins were left behind. Therefore, the frame of the leaves was reserved.
Then researchers seeded cardiac muscle cells into the vacancy left by spinach cells and after five days the muscle cells started to beat.
Uhmwpe Rope
â— HMPE feels very slippery to the hand.
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UHMPE has many names: Ultra-high-molecular-weight polyethylene (UHMWPE or sometimes shortened to UHMW), also known as high-performance polyethylene (HPPE).
Manufacturers of ropes for boat use and general marine applications wax poetic and can only speak in superlatives when describing HMPE!
The characteristics of UHMWPE Rope
â— UHMWPE Rope does NOT absorb water.
â— It is stong. It is twice as strong as hardened steel (per unit area)
â— HMPE has a very low coefficient of friction. In this it is similar to Teflon which is very slippery.
â— Great abrasion Resistance
â— UHMW-PE is self-lubricating
â— UHMW-PE has good UV resistance.
â— Low Elasticity.