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Untangling Rosalind Franklin’s Role in DNA Discovery, 70 Years On

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Untangling Rosalind Franklin’s Role in DNA Discovery, 70 Years On

On April 25, 1953, James Watson and Francis Crick revealed a landmark paper in Nature, proposing the double helix because the lengthy elusive construction of DNA, a discovery {that a} decade later earned the lads the Nobel Prize in Physiology or Drugs.

Within the remaining paragraph of the paper, they acknowledged that that they had been “stimulated by a information of the overall nature of the unpublished experimental outcomes and concepts” of two scientists at King’s School London, Maurice Wilkins and Rosalind Franklin.

Within the 70 years since, a much less flattering story has emerged, thanks largely to Dr. Watson’s personal best-selling ebook, “The Double Helix.” Within the ebook, he not solely wrote disparagingly of Dr. Franklin, whom he referred to as Rosy, but in addition mentioned that he and Dr. Crick had used her knowledge with out her information.

“Rosy, after all, didn’t instantly give us her knowledge,” Dr. Watson wrote. “For that matter, nobody at King’s realized they have been in our fingers.”

This account turned a parable of poor scientific habits, resulting in a backlash in opposition to Dr. Watson and Dr. Crick and turning Dr. Franklin right into a feminist icon. It additionally set off a long-running debate amongst historians: Exactly what position did Dr. Franklin play within the discovery of the double helix, and to what extent was she wronged?

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In a brand new opinion essay, revealed in Nature on Tuesday, two students argue that what transpired “was much less malicious than is broadly assumed.” The students, Matthew Cobb, a zoologist and historian on the College of Manchester who’s writing a biography of Dr. Crick, and Nathaniel Consolation, a historian of drugs at Johns Hopkins College who’s writing a biography of Dr. Watson, draw upon two beforehand missed paperwork in Dr. Franklin’s archive.

These paperwork, they are saying, recommend that Dr. Franklin knew that Dr. Watson and Dr. Crick had entry to her knowledge and that she and Dr. Wilkins collaborated with them. “We needs to be pondering of Rosalind Franklin, not because the sufferer of DNA, however as an equal contributor and collaborator to the construction,” Dr. Consolation mentioned.

Different specialists mentioned that the brand new paperwork have been attention-grabbing however didn’t seriously change the narrative; it has lengthy been clear that Dr. Franklin performed a key position within the discovery. “What this does is add a bit new proof to a path, which leads on to Franklin’s being a significant participant,” mentioned David Oshinsky, a historian of drugs at New York College.

And no matter what Dr. Franklin knew about who had entry to her knowledge, the brand new paperwork don’t change the truth that she didn’t obtain ample recognition for her work, some historians mentioned.

“What’s unequal and has all the time been unequal and continues to be unequal about Rosalind Franklin is the credit score that she didn’t get within the aftermath of the invention,” mentioned Dr. Jacalyn Duffin, a hematologist and historian of drugs at Queen’s College, in Canada.

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Within the early Nineteen Fifties, Dr. Watson and Dr. Crick have been working collectively on the College of Cambridge, in Britain, making an attempt to piece collectively the construction of DNA, largely by constructing fashions of the molecule.

At close by Kings School London, Dr. Franklin and Dr. Wilkins have been making an attempt to resolve the identical puzzle experimentally, utilizing X-rays to create photographs of DNA. (That they had a famously fractious relationship, and largely labored individually.)

In “The Double Helix,” Dr. Watson advised that his breakthrough got here after Dr. Wilkins confirmed him considered one of Dr. Franklin’s photographs, generally known as {Photograph} 51. “The moment I noticed the image my mouth fell open and my pulse started to race,” Dr. Watson wrote.

That ebook was revealed in 1968, a decade after Dr. Franklin died of ovarian most cancers at age 37, and it turned the prevailing narrative of the invention. However the true story was extra advanced.

In December 1952, Dr. Crick’s supervisor, the molecular biologist Max Perutz, acquired a report on Dr. Franklin’s unpublished outcomes throughout an official go to to King’s School. Dr. Perutz later gave this report back to Dr. Crick and Dr. Watson.

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This knowledge proved extra helpful to the pair than {Photograph} 51, mentioned Dr. Cobb and Dr. Consolation, who discovered a letter that suggests Dr. Franklin knew her outcomes had made their technique to Cambridge.

Within the letter, which was written in January 1953, Pauline Cowan, a scientist at King’s School, invited Dr. Crick to an upcoming discuss by Dr. Franklin and her scholar. However, Dr. Cowan wrote, Dr. Franklin and her scholar mentioned that Dr. Perutz “already is aware of extra about it than they’re more likely to get throughout so it’s possible you’ll not assume it worthwhile coming.”

That letter “strongly suggests” that Dr. Franklin knew the Cambridge researchers had entry to her knowledge and that she “doesn’t appear to have minded,” Dr. Cobb mentioned.

Dr. Cobb and Dr. Consolation additionally discovered a draft of a never-published Time journal article in regards to the discovery of the double helix. The draft characterised the analysis not as a race however because the product of two groups that have been working in parallel and sometimes conferring with one another.

“It portrays the work on the double helix, the fixing of the double helix, because the work of 4 equal contributors,” Dr. Consolation mentioned.

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Elspeth Garman, a molecular biophysicist on the College of Oxford, mentioned that she agreed with Dr. Consolation and Dr. Cobb’s conclusion, saying, “They received proper that she was a full participant.”

However Dr. Perutz’s sharing of Dr. Franklin’s unpublished knowledge is “barely iffy,” she mentioned. (In 1969, Dr. Perutz wrote that the report was not confidential however that he ought to have requested for permission to share it “as a matter of courtesy.”)

Nonetheless, different scientists and historians mentioned they have been puzzled by the arguments made within the Nature essay. Helen Berman, a structural biologist at Rutgers College, referred to as them “form of unusual.” Of Dr. Franklin, she mentioned, “If she was an equal member, then I don’t know that she was handled very nicely.”

Dr. Franklin and Dr. Wilkins every revealed their very own leads to the identical challenge of Nature that included Dr. Watson and Dr. Crick’s report, as a part of a bundle of papers. However Dr. Berman questioned why the scientists didn’t collaborate on a single paper with shared authorship. And a number of other students mentioned that they thought the brand new essay minimized the wrongdoing by the Cambridge workforce.

Dr. Consolation mentioned that he and Dr. Cobb weren’t “making an attempt to exonerate” Dr. Watson and Dr. Crick, whom he mentioned have been “gradual to completely acknowledge” Dr. Franklin’s contribution. Dr. Cobb mentioned that the Cambridge scientists ought to have informed Dr. Franklin that they have been utilizing her knowledge. “They have been ungallant,” he mentioned. “They weren’t as open as they need to have been.” However, he added, it wasn’t “theft.”

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There is no such thing as a proof that Dr. Franklin felt aggrieved by what occurred, historians mentioned, and she or he turned pleasant with the Cambridge duo within the remaining years of her transient life. “So far as I can inform, there was no dangerous feeling,” Dr. Oshinksy mentioned.

Which may have modified had Dr. Franklin lived lengthy sufficient to learn “The Double Helix,” a number of students famous. “‘The Double Helix’ is simply appalling,” Dr. Garman mentioned. “It offers a really, very slanted view, and doesn’t give her the credit score for the bits that they even used from her.”

Dr. Franklin’s early demise additionally meant she missed out on the Nobel Prize, however the Nobel Meeting may have discovered different methods to acknowledge her contribution, mentioned Nils Hansson, a historian of drugs at Heinrich Heine College Düsseldorf, in Germany. Neither Dr. Watson nor Dr. Crick talked about her after they accepted their awards, Dr. Hansson famous, though Dr. Wilkins, who additionally acquired the prize, did.

“She really did get a uncooked deal,” mentioned Dr. Howard Markel, a doctor and historian of drugs on the College of Michigan and the creator of “The Secret of Life,” a ebook in regards to the discovery of the double helix. “Everybody likes to obtain correct credit score for his or her work. Everybody ought to care sufficient about their colleagues to make sure the method of truthful play.”

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Summer is tick season, but these tips can help you avoid the bloodsucking bugs

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Summer is tick season, but these tips can help you avoid the bloodsucking bugs

Tick season is starting across the U.S., and experts are warning the bloodsuckers may be as plentiful as ever.

Another mild winter and other favorable factors likely means the 2024 tick population will be equal to last year or larger, some researchers say.

“It’s very bad and has only been getting worse,” said Susanna Visser of the Centers for Disease Control and Prevention.

TICK BITES AND LYME DISEASE: WHAT TO DO IF A TICK BITES YOU OR YOUR PET

An increasing variety of ticks are pushing into new geographical areas, bringing unusual diseases. Exotic southern species like the Gulf Coast tick and the lone star tick are being detected in New York and other northern states, for example.

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But the tick that experts warn of the most is a common blacklegged tick, which is found mainly in forests and spreads Lyme disease. Infection rates begin to peak in May, and U.S. health officials estimate nearly half a million Lyme disease infections happen annually.

Here’s a look at what’s expected this year and how you can protect yourself.

An adult deer tick, also known as the blacklegged tick, crawls on a fingernail at Connetquot State Park in Oakdale, New York on Dec. 27, 2011. (Bill Davis/Newsday RM via Getty Images)

TICK FACTS

Ticks are small, eight-legged bloodsucking parasites — arachnids, not insects — that feed on animals and sometimes people. Some ticks are infected with germs that can cause illness, and they spread those germs when they bite.

There is no widely accepted estimate of how many ticks there are from one year to the next, but there is a scientific consensus that they are an increasingly common health hazard in large portions of the United States.

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Blacklegged ticks — also known as deer ticks, since they feed on deer — are among the most common ticks in the eastern half of the U.S. They were plentiful centuries ago, then diminished when forests were cut down and deer were hunted, and rebounded alongside deer and wooded suburbs. The ticks have spread out from pockets in New England and the Midwest over a wider range.

Tick populations cycle throughout the year and their numbers depend on a few factors. They like warm, humid weather, and more can be seen after a mild winter. The more deer and mice available to feed matters, too.

Overall, the blacklegged tick population has been expanding for at least four decades, researchers say.

“This is an epidemic in slow motion,” said Rebecca Eisen, a CDC research biologist and tick expert.

2024 TICK SEASON FORECAST

Weather can play a role in the severity of a tick season.

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Very cold, dry winters can whittle down tick populations, but recent winters have been mild — a trend some attribute to climate change.

As Scott Williams, a tick researcher at the Connecticut Agricultural Experiment Station, said: “Winters are no longer limiting the tick population.”

Ticks can withstand the heat but tend to almost hibernate when it’s a dry summer. That happened in Maine in 2020 through 2022, said Chuck Lubelczyk, a vector ecologist at the MaineHealth Institute for Research.

But last year was a very wet year, and tick activity multiplied in Maine — the state with the highest incidence of Lyme disease in the country. Weather service predictions call for higher temperatures and precipitation, so “on paper, at least, it could be a very good year for the ticks,” Lubelczyk said.

In Wisconsin, adult ticks were out longer than usual due to a mild winter. The tick nymphs are starting to emerge, and a wet spring is setting the stage for the possibility that the population will be robust, said Xia Lee, an entomologist at the Wisconsin Department of Health Services.

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Ditto New York.

“It will be as bad as last year, or worse,” said Saravanan Thangamani, who studies ticks and tickborne diseases at SUNY Upstate Medical University in Syracuse.

WHAT IS LYME DISEASE?

Not all ticks are infected with disease-causing germs — about 20% to 30% of the blacklegged tick nymphs that emerge in the Northeast and Midwest this spring and into summer will be carrying the bacteria that causes Lyme disease, experts estimate.

Lyme disease symptoms tend to start between three and 30 days after a bite occurs and can include fever, headache, fatigue and a bull’s-eye-like rash. If you get bitten and develop symptoms, see a doctor to get treated with antibiotics.

HOW TO KEEP TICKS OFF OF YOU

Experts say the best thing to do is take steps to avoid a tick bite in the first place.

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If you go outdoors, make note of wooded areas and where grassy properties start bleeding into wooded areas. Ticks tend to perch on ankle-level vegetation with their upper legs outstretched, waiting to latch on to an unsuspecting dog or human.

Try to walk in the middle of paths, wear light-colored and permethrin-treated clothing and use Environmental Protection Agency (EPA)-registered insect repellents.

HOW TO CHECK FOR TICKS

When you come inside, check for ticks. They can be found anywhere on the human body, but common spots include around the waist, behind the knees, between fingers and toes, on underarms, in the belly button and around the neck or hairline.

They are harder to see when they are young, so look carefully and immediately pull them off with tweezers.

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The CDC does not recommend sending individual ticks to testing services for analysis, because a person might get more than one tick bite and the results from the tested tick may not be sufficient information.

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Pizza for Weight Loss? Top MD Says This Dough Makes It Possible

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