Henrietta Lacks was called, but for the scientists it was become simply into HeLa. Our protagonist was an agricultural diligent poor person of the tobacco farmings of the south of the United States, that worked hard in same lands where its ancestor cultivated the plantation using fetters. He died in 1951 because of a col cancer, and exactly thus he reached immortality.
Its family not wise person until then, but when Henrietta fought against the tumor that it would arrebataria the life, the doctors had practised a biopsia to extract part of its tumorais cells. The doctors had decided to conserve them without informing to nobody, habitual custom at that time. Those cells had finished for becoming themselves into one of the tools most important on which the medicine counts because of an incredible characteristic: they are remained alive and they grow vigorously. Immortal” human being is about the first cellular line “that the great scale can be cultivated.
She results ironic that she has left of its uterus follows living creature, each time with bigger volume, although that in October of this year she will make 60 years of the death of its giver. To finish with the HeLa cells she has that to submit them it the radiation, to deprive them of nutrients or water, or to place them in contact with other cells that fagocitem them. But if the conditions are remained steady, the tumorais cells, in contrast of sãs, simply do not age. If we could pile up in a scale all the cultivated HeLa cells until the date, its weight would surpass the 50 tons.
Thanks to them, it was possible to develop the vaccine against the pólio, to discover certain secrets of the cancer and some viruses and also to evaluate the effect of the atomic bomb. Also in served to conquer important advances in fertilização vitro, clonagem and genetic sequenciamento.
In a classic example of the total lack of ethics, the family of Henrietta did not inquire itself about “immortality” up to the 20 years after that biopsia, when the scientists had entered in contact with its husband and son to continue the research. Henrietta died poor, but thousands of millions of its tumorais cells had been vendidas the laboratories of everybody, generating a multimillionaire business of which its family never saw a cent.
In fact, one of the children of Henrietta, Deborah call, is asked with frequency if they did not clonaram its mother and it does not obtain to understand and to accept because its another sister, Elsie, died in an institution for deficient mental with 15 years without counting on no plan of medical assistance. All one contrassenso leading in account that Henrietta Lacks can have been the woman most important in all the history of the medicine.
One in each five people believes ET's
20% of the world-wide population believe that the extraterrestrial ones walk between disfarçados us of normal people.
The inquiry made for Reuters the 23 a thousand adults in more than 22 countries disclosed that 1 in each 5 people believes the existence of ET's, that is, 20% of the world-wide population. This means that 80% of the world do not believe `aliens'.
More than 40% of the inquired ones of India and China believe that the extraterrestrial ones live between disfarçados us of human beings, whereas Belgian, Swedish and dutch they are less believing, with only 8% to believe the existence of ET's. “The explanation can be in the fact of in the small countries if knowing the neighbors well”, affirmed John Wright, of the Ipsos firm.
The inquiry made for Reuters the 23 a thousand adults in more than 22 countries disclosed that 1 in each 5 people believes the existence of ET's, that is, 20% of the world-wide population. This means that 80% of the world do not believe `aliens'.
More than 40% of the inquired ones of India and China believe that the extraterrestrial ones live between disfarçados us of human beings, whereas Belgian, Swedish and dutch they are less believing, with only 8% to believe the existence of ET's. “The explanation can be in the fact of in the small countries if knowing the neighbors well”, affirmed John Wright, of the Ipsos firm.
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To sleep consolidates the learning
Scientists of the School of Medicine of the University of Harvard, in the United States, designate that she has a bond enters the content of sleep and the acquisition of the susceptível knowledge of being applied in the rática
p, that is, to take off one soneca after to study would help to reaffirm the information.
The research showed that the acquisition of knowledge improves in the people who soon sleep after to study. On the other hand, those that do not sleep show more difficulties to carry through tasks previously proposals.
The study, that was published in the magazine of scientific spreading Current Biology, it showed that they had considered to a group of volunteers some possibilities to escape of one definitive digital labyrinth that later had been separate in two sub-groups. The first ones had been motivated to take off one soneca, however the others had followed with its quotidianas activities.
After some hours, those that had slept had shown to be well capable to escape of the labyrinth of that those that had not rested. Specifically, the volunteers who had revealed to have dreams related with the exits of the labyrinth had been the ones that had had greater success to find in the practical one.
- “The dreams can be a pointer of that the brain is working in the same problem to many levels”, it assured the doctor Robert Stickgold, who led this research. In turn, Erin Wamsley, co-author of the study, suggested that the unconscious brain works in the things that consider more important.
According to specialists, this phenomenon could be used to improve the learning and the memory. For example, when studying before lying down to sleep, or to take off one soneca after to have studied per the afternoon would develop the possibilities to consolidate the learning so that it was placed in practical successfully a little later.
p, that is, to take off one soneca after to study would help to reaffirm the information.The research showed that the acquisition of knowledge improves in the people who soon sleep after to study. On the other hand, those that do not sleep show more difficulties to carry through tasks previously proposals.
The study, that was published in the magazine of scientific spreading Current Biology, it showed that they had considered to a group of volunteers some possibilities to escape of one definitive digital labyrinth that later had been separate in two sub-groups. The first ones had been motivated to take off one soneca, however the others had followed with its quotidianas activities.
After some hours, those that had slept had shown to be well capable to escape of the labyrinth of that those that had not rested. Specifically, the volunteers who had revealed to have dreams related with the exits of the labyrinth had been the ones that had had greater success to find in the practical one.
- “The dreams can be a pointer of that the brain is working in the same problem to many levels”, it assured the doctor Robert Stickgold, who led this research. In turn, Erin Wamsley, co-author of the study, suggested that the unconscious brain works in the things that consider more important.
According to specialists, this phenomenon could be used to improve the learning and the memory. For example, when studying before lying down to sleep, or to take off one soneca after to have studied per the afternoon would develop the possibilities to consolidate the learning so that it was placed in practical successfully a little later.
