New sperm-based biological robots or biobots developed by scientists can be used to fertilize individual eggs or to deliver targeted doses of drugs to them.
Oliver Schmidt and his team at the Institute for Integrative Nanosciences in Dresden, Germany, made this breakthrough by combining individual sperm cells with tiny magnetic metal tubes, New Scientist reported.
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For creating them, Schmidt's group fashioned microtubes 50 microns long, by 5 to 8 microns in diameter from iron and titanium nanoparticles.
Then the researchers added the microtubes to a fluid that contained thawed bull sperm, and as tube's one end was narrower than the other, sperm reaching the wider end become trapped, headfirst, while their flagella was still free.
Scientists were able to control microtubes' orientation by using external magnetic fields.
The paper has been published in journal Advanced Materials.
Source: ANI
Scientists were able to control microtubes' orientation by using external magnetic fields.
The paper has been published in journal Advanced Materials.
Source: ANI
Genetic Engineering Study Confirms Role of Sperm Competition in Formation of New Species
Close proximity with a female—something that occurs in a majority of species, including humans—results in the ejaculates from two or more males overlapping within her reproductive tract.
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 Invitro Fertilisation - AnimationDuring IVF fertilization takes place invitro, in an incubated petri dish. The resulting embryo is transferred back to the uterus on Day 3 at the 6-8 cell stage. Sometimes the embryo transfer in done at the blastocyst stage on Day 5. The embryo is drawn into a specialized catheter along with a small amount of culture medium and is transferred to the uterus. | Advertisement
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Number of Donor Eggs for in Vitro Fertilization Increased, With Improved Outcomes
In the United States, between 2000 and 2010, the number of donor eggs used for in vitro fertilization increased and outcomes for births from those donor eggs improved.
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