Fluorescent Protein Quotes

Resting his elbows on a wooden rail, he eagerly breathed in the cool, salty air. It took a few minutes for Fra Armando to notice how odd the southward rushing waters looked. The twilight-colored river had turned to blood. The Friar followed the dizzying rush of lenticular red cells, the size of loaves of bread, the amoeba-like gliding of the white cells, transparent enough to show their darkened nuclei, the snaking spiral worms that must have been malaria germs, the unusual fluorescence of lymph, the currents of glucose and protein. Fascinated and deathly tired, the Friar suddenly sensed that everything was alive, that everything lives, and that the universe does not at all operate like clockwork. Instead, it is a malleable architecture like the human body, a temple of skin, a basilica of scratches, a cenotaph of snot, with no right angles or durable materials, where the person creates his dreams, thoughts, and illusions, his time and his language like a cell secretes a hair or the crystal horn of a nail. And still, the least important cell in the universal body receives, through angel hormones and neural visions, the imperious commandments of God.

Glowing technology was also used to track success while engineering the first transgenic dog, Ruppy, short for Ruby Puppy. Ruppy was born in South Korea in 2009, one of a litter of four cloned beagles engineered by scientists at Seoul National University to express a red fluorescent protein gene. The experiment was a proof of concept; the team only intended to show that transgenic dogs could be cloned. Ruppy and her genetically identical littermates looked like perfectly normal beagles under natural light. But under ultraviolet light, they all glowed a charming, bright, ruby red. When Ruppy was mated to a non-transgenic dog, half her puppies inherited the red protein gene, indicating that the transgene had incorporated successfully into her germ line.

How is regeneration of the spinal cord in the salamander related to its initial development ? There is now evidence that in the salamander, the steps of progenitor cell-patterning and controlled neurogenesis that naturally regenerate a severed tail largely recapitulate the steps followed during early embryonic development to initially build the central nervous system. For example, ependymal cells are descendants of radial glial cells retained from the earliest developmental stages in regenerating vertebrates. The ependymal tube that gives rise to regenerated spinal cord following salamander tail amputation is very similar in appearance to the early structure of the neural tube of developing amniotes. But how does that recapitulation occur ? By using a transgenic axolotl that expresses green fluorescent proteins (GFPs), they further examined the regenerated spinal cord by replacing a segment of the spinal cord from a typical animal with a piece of the spinal cord from a GFP-expressing animal - that is, one with green fluorescent cells. They found that the implanted cells in the experimental animals regenerated a green spinal cord ! Thus, regeneration may be a more neural stem-cell like, or pluripotent, state as a response to injury.

Encrypted digital watermarking,” explains Balthazar. “Information gets hidden in information, like a code inside the pixels. Only visible with the right kind of key. It’s called steganography. Here,” pointing at the cylinder, “they’re using a similar technique, but done at the nano-level, with DNA as the information carrier. GFP is green fluorescent protein, in this case jellyfish genes woven into the atoms of the metal. The heat from your hand is the key.