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The term sperm refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. The human sperm cell is haploid, so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell.
UVA researchers reveal how sperm use 'harpoon' to facilitate fertilization

UVA researchers reveal how sperm use 'harpoon' to facilitate fertilization

Could the sperm harpoon the egg to facilitate fertilization? That's the intriguing possibility raised by the University of Virginia School of Medicine's discovery that a protein within the head of the sperm forms spiky filaments, suggesting that these tiny filaments may lash together the sperm and its target. [More]
FamilyCord announces recent acquisition of LifeLine Cryogenics

FamilyCord announces recent acquisition of LifeLine Cryogenics

California Cryobank Stem Cell Services LLC (dba "FamilyCord"), announced the recent acquisition of LifeLine Cryogenics, an east coast cord blood and reproductive tissue bank primarily servicing the New York tristate area. LifeLine clients will maintain full access to their invaluable tissues, and all prepaid contracts will be honored. [More]
Environmental factors promote genetic mutations, have underappreciated effect on disease, evolution

Environmental factors promote genetic mutations, have underappreciated effect on disease, evolution

Washington State University researchers say environmental factors are having an underappreciated effect on the course of disease and evolution by prompting genetic mutations through epigenetics, a process by which genes are turned on and off independent of an organism's DNA sequence. [More]
RGS2 protein plays significant role in healthy egg-sperm union in mice

RGS2 protein plays significant role in healthy egg-sperm union in mice

Researchers at the National Institutes of Health have discovered a protein that plays a vital role in healthy egg-sperm union in mice. The protein RGS2 can delay an egg's development into an embryo in order to allow time for sperm to arrive and merge with the egg in a healthy fertilization process. The embryo cannot survive without the male chromosomes. [More]
Research findings may provide new approach to treating male infertility

Research findings may provide new approach to treating male infertility

A team of researchers from the National University of Singapore's (NUS) Yong Loo Lin School of Medicine has demonstrated for the first time that hydrogen sulphide (H2S), when applied exogenously, could protect testicular germ cells, which are male reproductive cells, against heat-induced injury, which is one of the major causes of male infertility. [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]
Lumen 100-LED system integrated by Microptic allows fast, accurate sperm viability testing

Lumen 100-LED system integrated by Microptic allows fast, accurate sperm viability testing

Prior Scientific reports that its Lumen 100-LED has been integrated by Microptic SL to provide illumination for their Sperm Class Analyser system. [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]
Chromosomal abnormalities in embryos created for IVF can be predicted at earliest stage of human development

Chromosomal abnormalities in embryos created for IVF can be predicted at earliest stage of human development

Scientists at Oregon Health & Science University, Stanford University, University of Valencia and IGENOMIX have discovered that chromosomal abnormalities in human embryos created for in vitro fertilization, or IVF, can be predicted within the first 30 hours of development at the cell-1 stage which results from the union of a female egg and male sperm. [More]
IRB Barcelona scientists provide molecular details about Seckel Syndrome

IRB Barcelona scientists provide molecular details about Seckel Syndrome

Today in Nature Communications, scientists at the Institute for Research in Biomedicine (IRB Barcelona) provide molecular details about Seckel Syndrome, a rare disease that causes microcephaly, or small brain, and growth delays. [More]
Research Instruments receives European patent for RI Witness system

Research Instruments receives European patent for RI Witness system

Research Instruments Ltd, a company that develops cutting edge technology and biomedical equipment for use in the Assisted Reproduction (AR) sector, today announced the company has been awarded a European patent for their RI Witness system. It's the first to issue from a portfolio of patents filed for RI Witness. [More]
Researchers receive 2.6 million euros to study evolution of sexual reproduction in plants

Researchers receive 2.6 million euros to study evolution of sexual reproduction in plants

A European and US consortium coordinated by Jorg Becker, group leader at the Instituto Gulbenkian de Ciencia (IGC; Portugal), has now received funding of 2.6 million euros for 3 years to study the evolution of sexual reproduction in plants. The project is funded under the scope of ERA-CAPS, a European network dedicated to support research activities in Plant Sciences. [More]
Certain stem cells use microscopic nanotubes to communicate with neighboring cells, shows research

Certain stem cells use microscopic nanotubes to communicate with neighboring cells, shows research

When it comes to communicating with each other, some cells may be more "old school" than was previously thought. Certain types of stem cells use microscopic, threadlike nanotubes to communicate with neighboring cells, like a landline phone connection, rather than sending a broadcast signal, researchers at University of Michigan Life Sciences Institute and University of Texas Southwestern Medical Center have discovered. [More]
New research links mutations in TEX11 gene to some cases of male infertility

New research links mutations in TEX11 gene to some cases of male infertility

In the most severe form of male infertility, men do not make any measurable levels of sperm. This condition, called azoospermia, affects approximately 1 percent of the male population and is responsible for about a sixth of cases of male infertility. [More]
Caya contoured diaphragm to expand U.S. women's options for nonhormonal barrier contraception

Caya contoured diaphragm to expand U.S. women's options for nonhormonal barrier contraception

With the launch of the Caya contoured diaphragm this June, women in the United States will have access to a method of contraception that is nonhormonal, has few side effects, and can be used for up to two years. Last fall, the United States Food and Drug Administration cleared the single-size Caya contoured diaphragm for marketing in the US, and now the diaphragm is available by prescription from healthcare providers. [More]
Groundbreaking UVA research may lead to creation of male contraceptive

Groundbreaking UVA research may lead to creation of male contraceptive

Groundbreaking new reproductive research from the School of Medicine has identified key molecular events that could be playing a critical role as sperm and egg fuse to create new life. The findings might one day lead to the creation of a male contraceptive. [More]
Women who underwent uterine transplantation adjust to sudden restoration of fertility

Women who underwent uterine transplantation adjust to sudden restoration of fertility

In October last year the Gothenburg, Sweden, group of Mats Bra?nnstro?m announced the world's first live birth following the transplantation of a donated uterus. [More]
Study on how maternal proteins help regulate initial cell divisions during early development

Study on how maternal proteins help regulate initial cell divisions during early development

Researchers in the University of Georgia's Regenerative Bioscience Center are visually capturing the first process of chromosome alignment and separation at the beginning of mouse development. The findings could lead to answers to questions concerning the mechanisms leading to birth defects and chromosome instability in cancer cells. [More]
Study finds increased rates of autism among the children of teen moms

Study finds increased rates of autism among the children of teen moms

The largest-ever multinational study of parental age and autism risk, funded by Autism Speaks, found increased autism rates among the children of teen moms and among children whose parents have relatively large gaps between their ages. The study also confirmed that older parents are at higher risk of having children with autism. The analysis included more than 5.7 million children in five countries. [More]
Electroporation technique brings higher efficiency, higher  throughput genome engineering in animal models

Electroporation technique brings higher efficiency, higher throughput genome engineering in animal models

Jackson Laboratory researchers have shown that using an electric current to deliver the CRISPR/Cas9 system, in order to engineer genetic changes in laboratory mice, is highly efficient and significantly improves the system's throughput. [More]
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