From ancient times to the present day, human beings have dreamed of being able toEternal youth, rejuvenation, and even immortality
Whether it is a person with a noble status and a very high power, or a person with great wealth, or ordinary people are looking for it.
Look for the "elixir of life".
Even the ancient emperors searched for a panacea in pursuit of eternal life, but unfortunately lost their lives because of the accidental ingestion of poison.
But humans can use some modern medical maintenance methods to delay aging, butIt is impossible to achieve true rejuvenationAfter all, this does not conform to the laws of human growth.
If you eat Tang monk meat, you will live forever."
In China for a long time there has been about it"Immortality", "Rejuvenation".All kinds of legends, but these two idioms have a strong mythological color, and the description in "Journey to the West" is that all kinds of "monsters" are struggling to "eat Tang monk's meat and live forever", as well as in the martial arts ** "Tianlong Babu" Tianshan Tongma, because she is proficient in medical skills and is proficient in hidden weapons of life and death, she began to practice Changchun Gong from the age of six to the age of six, so that she will always be a child.
But these are still ** after all, human beings do not have the means to master this technology, but with the continuous improvement of medical technology, the average life expectancy of human beings has long been improved.
Lighthouse jellyfish. "Immortality" may be a difficult dream for human beings to realize, but there are no wonders in natureThere is a creature on Earth that has this ability, and it is also the only creature on Earth that can "rejuvenate"., this creature is-Lighthouse jellyfish.
The appearance of the jellyfish is dreamy and beautiful, and you will get the inner ** when you see the jellyfish in the aquarium, the jellyfish belongs to a member of the cnididia of the animal kingdom, and the jellyfish is divided intoCorals, polyps, and jellyfish, and the lighthouse jellyfish are among the hydra, and only they can "rejuvenate".
Hydroid structure. The lighthouse jellyfish is a small jellyfish, only 4-5 mm in diameter, the body is transparent, although the size is small, but the appetite is not small, the cross-section of the stomach is a special cross, they love to prey, usually feed on crustaceans, polychaetes, plankton, etc. and some small fish, is a typicalMeat lovers。Its name comes from the fact that its body is shaped like a clock, and the red digestive system can be seen through the transparent body, which looks like a lighthouse.
Beautiful lighthouse jellyfish.
Lighthouse jellyfish are mainly distributed in the tropical waters of the Caribbean, when the ocean-going business developed rapidly, lighthouse jellyfish were often involved in the ballast tanks of ocean-going ships, and the ballast water discharged by ocean-going ships in the ship's row, coupled with the more frequent human navigation activities, made the lighthouse jellyfish gradually disperse to other adjacent seas, and eventually spread to all parts of the world.
This special ability of the lighthouse jellyfish is actually well-known in the biological world, and it is precisely because of this special ability that it has attracted the attention of the world, which has aroused the research enthusiasm of biologists and the interest of netizens.
Coupled with some of the hype and boasting of ** and the blind follow-up of netizens, the lighthouse jellyfish was pushed to the top of ** for a while, and accumulated discussions also appeared on the Internet, making many people begin to believe in the legends of "immortality" and "rejuvenation".
But can the seemingly miraculous special features really achieve immortality? Is there a scientific basis for this? Is it authentic?
In this regard, Professor Xu Runlin, majoring in zoology at the School of Life Sciences, Sun Yat-sen University, answered these questions and revealed the secrets behind them from a rigorous scientific perspective after consulting a large number of domestic and foreign literature.
Before revealing the secrets behind it, let's briefly introduce how the lighthouse jellyfish get "immortality" and how the magical special function "rejuvenation" is performedThere are two main ways of expression.
1. Asexual reproduction
In the process of asexual reproduction, the lighthouse jellyfish will first transform its cells into a cyst from this stage, and then continue to grow and develop into the primitive life form of the jellyfish from this cyst"Polyp".
Longitudinal profile of the hydra.
According to the report of "National Geoopinion", in this process, the cell city of the whole body of the lighthouse jellyfish will be transformed, and the muscle cells will be transformed into neuronal cells, and this group of polyps will once again develop into hundreds of jellyfish that are almost identical to the DNA of the previous lighthouse jellyfish.To put it simply, clone yourself with yourself, clone countless yourself, and so onMake "immortality" seem easy2. "Transform" into polyps
First of all, let's briefly talk about polyps and jellyfish. They are two forms of existence in the life history of the phylum Cnidarians, with different physiological structures and shapes, and are two different life forms, which does not represent the relationship between juveniles and adults, and there is no relevant scientific basis to prove it.
And this kind of "rejuvenation" in the real sense.
In 1996, the Italian researcher Pilaino and members of his team conducted an experiment on lighthouse jellyfish, the experimental object was 400 jellyfish lighthouses in different developmental states, and they experimented in a way that changed the environment.
The experiment wasLet the lighthouse jellyfish experience starvation, change the water temperature of the living environment, sometimes increase and sometimes decrease, or reduce the salinity of the water, cause mechanical trauma, etc。As a result of these interventions, all 400 lighthouse jellyfish were transformed into polyps, and their bodies were younger and healthier. And all the 400 lighthouse jellyfish that participated in the experiment survived.
After the results of this experiment were reported, there was a lot of discussion, and according to Piraino et al., the lighthouse jellyfish transitioned from adult to juvenile and then re-developed, for exampleCan human beings regress from the age of 18 to the age of 10 or even 3, so that they can remain young forever and achieve eternal life?
Can lighthouse jellyfish live forever?
In addition to the asexual reproduction mentioned above, in factLighthouse jellyfish are sexually reproduced most of the time。They mate with their partners to reproduce the next generation, but once they have experienced sexual reproduction, they can no longer achieve "immortality", and although they have special abilities, they are willing to give up "eternal life" for the sake of the next generation, abandoning their own privilege of immortality.
Just after the experimental results of Pilaino and others were reported, the news that the lighthouse jellyfish could be "immortalized" began to spread wildly, and even hyped it up, making many netizens believe itAnd the belief that human beings will be able to master this special ability has added endless pressure to the medical community.
But in China, Sun Yat-sen University, School of Life Sciences, zoologyProfessor Xu RunlinAfter a detailed and careful study, the mystery was pointed out. Piraino et al. simply thought that the polyp was the state of the lighthouse jellyfish when they were young, but the lighthouse jellyfish belonged to the cnidarian species.
The life cycle of most cnidarians consists of two basic morphological stages:One is of the hydra type and the other is of the jellyfish typeThese two patterns can be alternated. Moreover, there is no difference between juvenile and adult, only the difference in which stage of life history accounts for more time.
Hydra type of cnidarians.
And according to the rigorous scientific biological point of view, every organism has an irreversible process from birth to death, and if the "immortality" of the lighthouse jellyfish really appears, the basic laws of biology will be overthrown.
Professor Xu Runlin also questioned the experimental results of Pilaino et alIf the lighthouse jellyfish can indeed live forever, then there should be an unlimited number of morphological transformations。At present, all the experimental research literature on lighthouse jellyfish has not clearly explained whether the morphological transformation of lighthouse jellyfish is infinite or not. How can we conclude that a lighthouse jellyfish can live forever based on a successful morphological transformation, this conclusion is obviously not rigorous enough.
As for the differentiation and transfer induction of 400 lighthouse jellyfish by Pilaino et al., in fact, it is very rare for them to appear in real life, so it is not possible to generalize only the results of research in the laboratory. SoThe claim of "eternal life" may simply be based on a false conclusion based on a lax scientific experiment.
But what is certain is that the lighthouse jellyfish is extremely adaptable and regenerating, even if it is physically damaged. In fact, there are many lower animals that have the ability to regenerate, such as those that are well known to humansEarthworms, geckos, and planarian planarians that can regenerate even if their bodies are divided into countless parts, once again perfectly forming a new individual.
Earthworm structure. "Tomorrow and the accident I don't know which one will come first",Therefore, what we do and think about every day should be to cherish the present moment.
Even if you can really have an "immortal" body, what about the special ability of "rejuvenation"? You may be able to get what you want, but you may not be able to get what you want to be with you, so what's the point?
In this long life, as long as you have fun in time, it is excellent to enjoy the happy time of the present, and do not worry too much about what is not certain in the future, and just add troubles to yourself.
There are many creatures that have the ability to regenerate, and lighthouse jellyfish are more powerful, but that doesn't mean they can live forever, they will also reach the end of their lives. And most lighthouse jellyfish will choose to reproduce sexually, thus giving up "eternal life", so shouldn't humans be obsessed with finding "immortality"?
The speed of development of science and technology is also obvious to all, and perhaps in the near future, with countless scientific research experiments, this special skill of lighthouse jellyfish can be mastered by humans. But when all this is not yet coming, you just need to live your life wellNo more following the crowd and blindly believing in legends that have not been scientifically proven.
To live well, do your own life planning, after all, everyone has only one life at present, we must cherish the time to seize the opportunity, and do not let yourself leave too many regrets. As long as you have a calm mind, you will always be young.