Culture
Rat spermatozoa are two to four times larger than that of other animal species and are easily damaged by changes in pH, osmotic pressure, and temperature. Because these animals are very frequently used in medical research, a cryopreservation method was developed nearly 20 years ago. However, rat spermatozoa motility after thawing is extremely poor, and unless artificial insemination is performed at night (10:00-11:00 pm) no offspring will be produced.
How you interact, how you feel, and how you act: The three basic tenants of social, emotional, and behavioral health are simple concepts, yet they can be some of the strongest predictors of well-being as children grow into adulthood. While a large number of children and adolescents meet the diagnostic criteria for mental health disorders, only a fraction actually receive needed services - and it often takes a crisis situation to initiate access to that help.
PULLMAN, Wash. - When food makes people sick, some blame birds because they hang around farms, and their feces can contain E. coli, Salmonella and Campylobacter, three common pathogens that can cause food-borne illness.
But a recent Washington State University study published in Biological Reviews on Jan. 31 has found scant evidence to support the link between wild birds and human illness involving those three pathogens.
Anti-carcinoembryonic antigen-related cell adhesion molecule antibody for fluorescence visualization
Oncotarget Volume 11, Issue 4: The research team's aim was to investigate mAb 6G5j binding characteristics and to validate fluorescence targeting of colorectal tumors and metastases in patient derived orthotopic xenograft models with fluorescently labeled 6G5j.
Neural stem and progenitor cells (NSPCs), from the so-called subventricular zone (SVZ), can help to repair a brain damaged by central nervous system disorders. It is known that the microenvironment within the SVZ directs the differentiation of stem and progenitor cells (NSPCs) toward cells in the nerve tissue. However, researchers have not yet been able to explain why NSPCs do not develop into neurons after injuries to the central nervous system, but rather into astrocytes.
Washington, DC - January 30, 2020 - The recent emergence of Wuhan coronavirus (2019-nCoV) has put the world on high alert for transcontinental transmission, reminiscent of the outbreak of SARS--also a coronavirus--in 2002-2003.
DETROIT - A new collaborative study published by a research team from the Wayne State University School of Medicine, the CReATe Fertility Centre and the University of Massachusetts Amherst provides the first in-depth look at the microbiome of human sperm utilizing RNA sequencing with sufficient sensitivity to identify contamination and pathogenic bacterial colonization.
New Haven, Conn. -- Ask a high school student how he or she typically feels at school, and the answer you'll likely hear is "tired," closely followed by "stressed" and "bored."
In a nationwide survey of 21,678 U.S. high school students, researchers from the Yale Center for Emotional Intelligence and the Yale Child Study Center found that nearly 75% of the students' self-reported feelings related to school were negative.
Most people have an aspect of their personality they'd like to change, but without help it may be difficult to do so, according to a study led by a University of Arizona researcher and published in the Journal of Research in Personality.
A new cryptocurrency-routing scheme co-invented by MIT researchers can boost the efficiency -- and, ultimately, profits -- of certain networks designed to speed up notoriously slow blockchain transactions.
Neanderthal DNA sequences may be more common in modern Africans than previously thought, and different non-African populations have levels of Neanderthal ancestry surprisingly similar to each other, finds a study publishing January 30 in the journal Cell. Researchers arrived at these findings by developing a new statistical method, called IBDmix, to identify Neanderthal sequences in the genomes of modern humans. The results also suggest that African genomes contain Neanderthal sequences in part due to back-migration of ancestors of present-day Europeans.
When the first Neanderthal genome was sequenced, using DNA collected from ancient bones, it was accompanied by the discovery that modern humans in Asia, Europe and America inherited approximately 2% of their DNA from Neanderthals -- proving humans and Neanderthals had interbred after humans left Africa. Since that study, new methods have continued to catalogue Neanderthal ancestry in non-African populations, seeking to better understand human history and the effects of Neanderthal DNA on human health and disease.
The first genetic analysis of schizophrenia in an ancestral African population, the South African Xhosa, will be published Jan. 31 in Science. An international group of scientists conducted the research.
The study of schizophrenia was carried out in the Xhosa population because Africa is the birthplace of all humans, yet ancestral African populations have rarely been the focus of genetics research. The Xhosa do not have an unusually high risk of schizophrenia.
Scientists from The University of Texas at Austin report in the journal Science that they have developed a new strategy to protect honey bees from a deadly trend known as colony collapse: genetically engineered strains of bacteria.
Daily drinking and smoking may be associated with modest increases in relative brain age compared to those who drink and smoke less, according to a study published in Scientific Reports.
Research has shown that certain lifestyle habits, such as heavy smoking and alcohol consumption, are associated with adverse effects in specific brain regions. However, it is unclear how smoking and alcohol consumption may be associated with brain age, especially when the whole brain is considered.