Release date: 2013-03-07
According to foreign media reports, from the ancient times to the present, in the eyes of the child, the mother has eyes on the back of the head, because they seem to know whatever they do with their mother. But nowadays, the "long eyes" of the back of the head is expected to become a reality. For the first time in history, scientists have shown that they can implant their eyes at the end of their jaws, and their eyes can still see things.
These researchers described the results of this study as "shocking." Biologists at the School of Arts and Sciences at Tufts University point out that this major discovery has many far-reaching implications, especially in the field of regenerative medicine.
Michael Levin, the head of the new study, said: "The ability to accept sputum is still visible when the ectopic eye is connected to the spinal cord rather than directly connected to the brain. This ability is really shocking. The primary goal of medicine is One day, using biological or artificial replacement parts to restore damaged or missing sensory structures. This research has many far-reaching implications, but from a medical point of view, its main significance is to treat sensory disturbances such as blindness without having to establish a special connection with the brain."
In the experiment, biologists took out the donated eyes by surgery and implanted them into the tail of the sputum to induce the growth of these ectopic eyes. The researchers removed the natural eye that received the sputum, leaving only the ectopic eye connected to the spinal cord. These scientists experimented with 134 cockroaches of the common laboratory animal Xenopus laevis.
They placed these amphibian research objects in a water-disc dish, illuminating half of it with red light, and illuminating the other half with blue light, and swapping the two lights at regular intervals. During the experiment, no matter when you broke into the half of the dish illuminated by red light, you will receive a small electric shock warning. The research team gained an exciting discovery: more than 19% of the optic nerve and the spine-connected sputum respond to light. When blue light stimulates natural motion, they dissipate red light.
The researchers conducted experiments with a sputum control group with intact natural eyes and found that they responded equally to light. However, this response was not verified in blindness or sputum that was not subjected to any electric shock. Levin said: "Our findings have never been seen before. No one would think that the eyes on the side of the abdomen can be seen, especially when only the eyes and the spinal cord are connected to the brain."
Source: Sina Technology
Freeze-drying powder process includes: fresh fruit selection - cleaning - cutting - blanching - cooling - drying - grinding beating - gel grinding - sterilization - pre-freezing - vacuum freeze-drying - ultra-fine grinding - weighing packaging - testing - finished product.
Firstly, fresh and mature fruits with good quality were selected in the pre-treatment area of the food lyophilizer, and the leaves were removed to remove impurities. Then, preliminary cleaning and simultaneous sterilization of fruit surface were carried out. After sterilization, the fruits were cleaned and drained again. After the drain, the fruit is sliced and treated by blanching process. After the color preservation, the fruit is treated by pulping, and then pasteurized. The pretreatment process is finished before lyophilization.
The processing core of freeze-drying powder is the equipment area of food freeze-drying machine. After pre-treatment, the fruit enters the equipment of food freeze-drying machine and crystallizes into a solid state at low temperature, and then sublimates and dries in a vacuum environment to obtain freeze-drying products with little water content. Freeze-dried products out of the warehouse into the food freeze-dried post-processing area, ultrafine grinding, and then according to the need to do weighing packaging, after testing the finished products packed into storage.
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