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How Easily Bacteria Clog the Medical Devices…!!

 

As a result of the study How Bacteria Clog Medical Devices, it is found that the microbes join to create slimy ribbons that tangle and trap other passing bacteria, creating a full block-age in a startlingly short period of time.

 

Using time-lapse imaging, researchers at Princeton University monitored fluid flow in narrow tubes or pores. Over a period of about 40 hours, researchers observed that some of the microbes - dyed green for visibility - attached to the inner wall of the tube and began to multiply, eventually forming a slimy coating called a Biofilm. These films consist of thousands of individual cells held together by a sort of biological glue. Over next several hours, the researchers sent additional microbes, dyed red, into the tube. These red cells became stuck to the biofilm-coated walls, where the force of the flowing liquid shaped the trapped cells into streamers that rippled in the liquid like flags rippling in a breeze. During this time, the fluid flow slowed only slightly.

 

At about 55 hours into the experiment, the biofilm streamers tangled with each other, forming a net-like barrier that trapped additional bacterial cells, creating a larger barrier which in turn ensnared more cells. Within an hour, the entire tube became blocked and the fluid flow stopped.

 

http://www.princeton.edu

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