Beijing time, March 5, according to foreign media reports, British scientists took the lead in finding a method for examining sperm using Raman spectroscopy containing laser beams. This technique is used to discover flawless healthy sperm to ensure greater success rate of IVF. Dr. Michael Morris, an expert in Raman spectroscopy at the University of Michigan, did not participate in the study, but he said: "This is a remarkable study because it can show that sperm has more subtle differences besides life and death. "On average, a man's ejaculate contains between 200 million and 500 million sperm. They wiggle their linear tails called flagella and move forward in order to find eggs to fertilize. For infertile men, their sperm has less pathological or defective sperm, which greatly reduces the probability of sperm survival in the harsh environment of the woman's genitals to fertilize the egg. Test-tube fertilization provides a method of fertility for men with abnormal sperm or low sperm count. Scientists use a light microscope to find a sperm cell and inject it directly into an egg for fertilization. Alistair Elfick, a professor at the University of Edinburgh in the UK who invented the technology using Raman spectroscopy, said that one problem associated with male infertility is that sperm damage often means DNA damage, not the DNA pair of the sperm cell itself Embryo development plays an important role. He pointed out: "The appearance of a sperm cell is very simple. DNA does not play a role in transporting itself, just a payload." While the optical microscope is pushing the "invisible tire" of the sperm cell, the Raman spectrum will open the "hood" To directly detect the DNA payload. The scientists used Raman spectroscopy to illuminate the 23 chromosomes of the sperm head. The light reflected by the damaged DNA is different from the intact DNA, so by detecting the reflected light, scientists can determine which DNA is most likely to produce a healthy human embryo, at least in theory. The scientists did not inject sperm identified by Raman spectroscopy into the eggs, but checked the number of embryos or their health. Before this technology can be used to create human life, scientists must conduct more experiments. At the same time, it also needs to be approved by the federal government. At present, this technology still has some drawbacks. Raman spectroscopy can only check dozens to hundreds of sperm cells at a time. But for many infertile men, this is not a problem, because the semen they ejected at once contains these amounts of sperm. Some scientists doubt the practice of injecting sperm that has been examined by Raman spectroscopy into eggs. But Elfick and Morris are convinced that the Raman spectrum containing the laser beam is not sufficient to cause any permanent damage to sperm cells. Professor Marx Tim of Northwestern University in Illinois uses Raman spectroscopy to examine human egg cells. He believes that it depends on a large amount of potentially harmful laser energy to make it work. Tim said: "This technique is not yet suitable for infertile couples. Using Raman spectroscopy to check sperm and fertilized eggs before they are placed in a woman's womb, it is necessary to conduct more research." Oven Glass,Oven Glass Replacement,Oven Door Glass Replace,Oven Door Glass Shattered WCH Temper Glass Co., Ltd , https://www.temperglasswch.com