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Semen is an organic fluid, also known as seminal fluid, that usually contains spermatozoa. It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals and can fertilize female ova. The process of discharge is called ejaculation.
New biosensor test system developed for accurate measurements of protein molecule concentration in blood

New biosensor test system developed for accurate measurements of protein molecule concentration in blood

Researchers from the General Physics Institute of the Russian Academy of Sciences and Moscow Institute of Physics and Technology have developed a new biosensor test system based on magnetic nanoparticles. [More]
PAHO recommendations for preventing or slowing spread of Zika virus

PAHO recommendations for preventing or slowing spread of Zika virus

Zika is a mosquito-borne virus that is new to the Americas. Since Brazil reported the first cases of local transmission of the virus in May 2015, it has spread to 21 countries and territories* of the Americas (as of 23 January 2016). [More]
Involuntarily childless couples could be helped with extra sperm analysis

Involuntarily childless couples could be helped with extra sperm analysis

New research findings from Lund University in Sweden show that a simple analysis of chromosomal breaks in sperms can facilitate choice of the most efficient treatment and, thereby, increase chances of successful assisted reproduction in involuntary childless couples. [More]
Liberia expects all-clear for Ebola, but further flare-ups are likely, warn experts

Liberia expects all-clear for Ebola, but further flare-ups are likely, warn experts

Today, the World Health Organization (WHO) officially announces that Liberia is free of Ebola transmission, finally bringing an end to the 2-year epidemic that has infected nearly 29,000 people and claimed more than 11,000 lives across Africa. [More]
RBHS Chancellor leads study to eliminate chronic viral hepatitis

RBHS Chancellor leads study to eliminate chronic viral hepatitis

Chronic viral hepatitis has a reputation for being a silent killer. The infection often goes undetected until the symptoms of advanced liver cancer appear. By that point, a patient has a five-year survival rate, according to the American Cancer Society. [More]
Endocrine-disrupting chemicals pose threat to male reproductive health

Endocrine-disrupting chemicals pose threat to male reproductive health

The birth rate is declining in all industrialised countries, and socioeconomic factors and women's age are not solely to blame. Male reproductive health and environmental factors are also significant, as concluded in a new scientific review article. [More]
Environmental and lifestyle factors damage men's reproductive health

Environmental and lifestyle factors damage men's reproductive health

Environmental and lifestyle factors are damaging men's reproductive health and may be playing a large role in decreasing fertility rates in industrialized countries, a new study in Physiological Reviews reports. Socioeconomic influences and female reproductive health cannot solely be blamed for higher incidences of infertility, the study supports. [More]
Study provides insight into the structure of dark proteome

Study provides insight into the structure of dark proteome

Proteins are often referred to as the building blocks of life, and make up about 15 per cent of the mass of the average person, performing a wide variety of essential functions in the body. [More]
New paper device could rapidly and inexpensively assess hepatitis B, male infertility

New paper device could rapidly and inexpensively assess hepatitis B, male infertility

Scientists have developed a new paper device that analyzes DNA and could rapidly and inexpensively assess disparate conditions including hepatitis B and male infertility, which together affect millions of people around the world. The test, reported in the Journal of the American Chemical Society, could be of particular help diagnosing people in low-income areas. [More]
Genomic analysis confirms sexual transmission of Ebola virus in Liberia

Genomic analysis confirms sexual transmission of Ebola virus in Liberia

A suspected case of sexual transmission of Ebola virus disease (EVD) in Liberia was confirmed using genomic analysis, thanks to in-country laboratory capabilities established by U.S. Army scientists in collaboration with the Liberian Institute for Biomedical Research (LIBR). [More]
Traces of Ebola can linger in semen for nine months

Traces of Ebola can linger in semen for nine months

Fragments of the Ebola virus can persist in the semen of survivors for as long as nine months after symptoms first develop, according to a study published in the New England Journal of Medicine. [More]

Ebola virus can linger in semen of some men nine months after onset of symptoms

Preliminary results of a study into persistence of Ebola virus in body fluids show that some men still produce semen samples that test positive for Ebola virus nine months after onset of symptoms. [More]
Men with higher exposure to phthalate have lower sperm motility

Men with higher exposure to phthalate have lower sperm motility

Men with higher exposure to the substance DEHP, a so-called phthalate, have lower sperm motility and may therefore experience more difficulties conceiving children, according to a Lund University study. [More]
Vaginal silicone ring may protect women against HIV, herpes virus

Vaginal silicone ring may protect women against HIV, herpes virus

Researchers at University Jean Monnet of Saint-Etienne, France have succeeded in developing a vaginal silicone ring that delivers molecules that act on both HIV and herpes virus. This research is presented at the 55th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC/ICC). [More]
NEI experts explore long-term effects of Ebola on the eye

NEI experts explore long-term effects of Ebola on the eye

Following the 2014 Ebola outbreak in West Africa that took the lives of more than 11,200 people in the region, the National Eye Institute, part of the National Institutes of Health, has deployed a team of clinicians and technical experts to Monrovia, Liberia to investigate the long-term effects of Ebola on the eye. [More]
Reducing amyloid fibril levels in semen may help reduce transmission of HIV

Reducing amyloid fibril levels in semen may help reduce transmission of HIV

There may be two new ways to fight AIDS -- using a heat shock protein or a small molecule - to attack fibrils in semen associated with the human immunodeficiency virus (HIV) during the initial phases of infection, according to new research from the Perelman School of Medicine at the University of Pennsylvania. [More]
Molecular tweezer blocks HIV, breaks up proteins in semen that boost infection

Molecular tweezer blocks HIV, breaks up proteins in semen that boost infection

An unprecedented potential "molecular tweezer" called CLR01, reported in the journal eLife, not only blocks HIV and other sexually transmitted viruses, but also breaks up proteins in semen that boost infection. [More]
Novartis announces FDA approval of Odomzo (sonidegib) 200 mg capsules for treatment of laBCC patients

Novartis announces FDA approval of Odomzo (sonidegib) 200 mg capsules for treatment of laBCC patients

Novartis today announced the US Food and Drug Administration has approved Odomzo (sonidegib, formerly LDE225) 200 mg capsules for the treatment of adult patients with locally advanced basal cell carcinoma (laBCC) that has recurred following surgery or radiation therapy, or those who are not candidates for surgery or radiation therapy. [More]
MES announces worldwide release of new automated sperm quality analyzer

MES announces worldwide release of new automated sperm quality analyzer

Medical Electronic Systems today announced the worldwide release of the SQA-Vision, the company's new automated sperm quality analyzer. The SQA-Vision was developed based on 10 years of market feedback and is positioned to augment the company's line of SQA-V and QwikCheck semen analyzers with a top of the line solution. [More]
Researchers develop sperm RNA diagnostic test to help determine best infertility treatment for couples

Researchers develop sperm RNA diagnostic test to help determine best infertility treatment for couples

A Wayne State University School of Medicine professor, in collaboration with researchers at CReAte Fertility Center, University of Toronto, Harvard University and Georgia Reagents University, has developed the first diagnostic test for sperm RNA based on next-generation sequencing. For couples with unexplained infertility, the test may help determine the best infertility treatment for couples having difficulty conceiving. [More]