منابع مشابه
Why is There Still no Human Vaccine Against Lyme Borreliosis?
Lyme disease, transmitted by ticks, is a complex illness that can be difficult to diagnose but easy to treat in most early cases, yet difficult in its latest stage. Every year, infections with Borrelia burgdorferi sensu lato spirochetes cause thousands of new cases of illness around the world, including people with a normal immunological reaction. Prevention in the form of vaccines is difficult...
متن کاملWhy is There Still Racism if There is No Such Thing as "Race"?
This presidential address is keyed to the exhibition "All of Us Are Related, Each of Us Is Unique." It reveals that there are no biological barriers between the 5.7 billion human beings that today inhabit the earth. We all have the same ancestors and the genetic diversity of contemporary human populations reflects the paths followed by our ancestors in the course of human migrations over the pa...
متن کاملThere is no lexicon!
0. Introduction Within generative linguistics, underlying representations have been a sine qua non. Such representations have been thought to encode what is unpredictable or not governed by rules. Within Optimality Theory (henceforth OT), even though the rules are virtually gone, this view continues. The function GEN and EVAL pair an underlying representation with an optimal output. I argue aga...
متن کاملIs there still a place for thrombectomy?
Malignancy is known to be a prothrombotic condition , and some antitumor drugs may amplify the hyper-coagulable tendency. We present a female patient with cancer, who developed acute coronary syndrome (ACS) due to occlusive intracoronary thrombus without underlying atherosclerosis. A 59-year-old woman with metastatic breast cancer diagnosed 2 years ago, paraneoplastic syndrome and steroid diabe...
متن کاملIs there still a strong CP problem ?
The rôle of a chiral U(1) phase in the quark mass in QCD is analysed from first principles. In operator formulation, there is a parity symmetry and the phase can be removed by a change in the representation of the Dirac γ matrices. Moreover, these properties are also realized in a Pauli–Villars regularized version of the theory. In the functional integral scenario, attempts to remove the chiral...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1992
ISSN: 0028-0836,1476-4687
DOI: 10.1038/360628a0