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Now in 3-D: Video of virus-sized particle trying to enter cell
Date:2/24/2014

ate the virus-like particle, the researchers coated a miniscule polystyrene ball with quantum dots, which are semiconductor bits that emit light and allow the camera to find the particle. Next, the particle was studded with protein segments known as Tat peptides, derived from the HIV-1 virus, which help the particle find the cell. The width of the final particle was about 100 nanometers.

The researchers then let loose the particles into a dish containing skin cells known as fibroblasts. One camera followed the particle while a second imaging system took pictures of the cell using a technique called laser scanning microscopy, which involves taking multiple images, each in a slightly different focal plane, and combining them to make a three-dimensional picture.


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Contact: Catherine Zandonella
czandone@princeton.edu
Princeton University
Source:Eurekalert

Page: 1 2 3

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