London : Sperms need to crane their necks to turn right to counteract a left-turning drive caused by the rotation of their tails, says new research, adding that the discovery can lead to better in-vitro fertilisation (IVF) and other fertility treatments, reports IANS. Led by Dr Vasily Kantsler from University of Warwick in Britain, the researchers discovered that all sperm tails (flagella) rotate in a counter-clockwise motion as they beat to enable them to move through and against the motion of a fluid.
The counter-clockwise motion means that sperm should only be able to move in a leftwards direction. But the researchers observed that approximately 50 percent of the sperm observed in the research moved to the right. Comprised of a head, mid connecting piece and the flagella, 3D motion analysis of the sperm found that they were distorting their bodies at the mid-piece to counteract the physical forces that causes them to turn left.
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