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Tag: "stretched" at biology news

Basis for DNA ejection from single phage particles

...fferent stages of the ejection process after being stretched by applied hydrodynamic flow. The study demonstrated that DNA release is not an all-or-none process, but rather is unexpectedly complex. DNA release occurred at a very high rate, reaching 75,000 base pairs of DNA/sec, but in a stepwise fashion. Pausi...

Purdue researchers use enzyme to clip 'DNA wires'

...ntire strand of DNA used in this research has been stretched onto silicon oxide surfaces at lengths up to 35 microns, or millionths of a meter, and 2 nanometers wide," Kinsella said. "When coated with particles and fragmented by the enzyme, we were able to distinguish that the once-single DNA wire was clipped ...

Can't serve an ace? Could be muscle fatigue

...rol over stride length during running - leading to stretched hamstrings and other injuries. "When a tennis player is serving, they don't watch where their shoulders are, they rely on the brain's knowledge of how much effort is required to maintain the best position, to get the ball where it needs to go. "How...

Chemical 'band-aid' prevents heart failure in mice with muscular dystrophy

...end of a single cardiac myocyte. As the myocyte is stretched between the carbon fibers, a transmitter on one fi...tiffer and resistant to stretching. When they were stretched repeatedly, they started shaking and eventually contracted and died." "It's a physiologically relev...

Researchers learn how blood vessel cells cope with their pressure-packed job

... resistant to vascular diseases. UCSD researchers stretched cells in a workout chamber the size of a credit ca...ineering at UCSD. When Chien and his collaborators stretched the cells back and forth along one axis in the miniature workout chambers, the cells formed stress f...

Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see

...ns has a total surface area of about five feet, if stretched out. The cortex is separated into large areas of specialized function, such as the motor and visual cortex, but is also organized on a finer scale into vertical "functional columns" within the .05-inch thickness of the cortex. Research in the 1960s ...

Nano springs eternal; Protozoan 'engine' posts nano records

... the stalk. At rest, the stalk is elongated like a stretched telephone cord. When it contracts, the spasmoneme winds back in a flash, forming a tight coil. To find out how fast and how hard Vorticella recoils, France and colleagues used modern microscopes and tools to measure the force and speed of the spring....

Are U.S. Flu Death Figures More PR Than Science?

... the stalk. At rest, the stalk is elongated like a stretched telephone cord. When it contracts, the spasmoneme winds back in a flash, forming a tight coil. To find out how fast and how hard Vorticella recoils, France and colleagues used modern microscopes and tools to measure the force and speed of the spring....

Similar Stem Cells In Insect And Human Gut

... the stalk. At rest, the stalk is elongated like a stretched telephone cord. When it contracts, the spasmoneme winds back in a flash, forming a tight coil. To find out how fast and how hard Vorticella recoils, France and colleagues used modern microscopes and tools to measure the force and speed of the spring....

How sperm crack the whip

...l as the way their tough membranes stretch tightly stretched over underlying structures, made the cells incompatible with this research technique. "Back in 2001, we made more than a thousand attempts to patch clamp sperm without success," said Clapham. "We had been quite frustrated by it. However, Yuriy fina...

Nanosecond-scale release of stinging jellyfish nematocysts

...e is caused by the release of energy stored in the stretched configuration of the collagen-polymer of the nematocyst capsule wall. This ingenious solution allows the cellular process of vesicle exocytosis to release kinetic energy in the nanosecond range by a powerful molecular spring mechanism. ...

Like a snail through the intestinal canal

... intestinal wall, which results in the walls being stretched and the patient feeling pain and discomfort. A better method, according to TU Delft researcher Dimitra Dodou, is in fact to use this layer of mucus and allow the robot to imitate the forward movement of a snail. A snail leaves a trail of slime beh...

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