... have unexplained causes. Chu also suggests that further studies of the proteins found in sperm cells will have a significant impact on our understanding of the paternal protein contribution that can ...
... how proteomics, a relatively new field focusing on the function of proteins in a cell, can be successfully applied to infertility, helping identify which proteins in sperm cells are dysfunctional.
... molecular messenger inside adult stem cells sounds the alarm when it senses hazards that could allow ... tissue type – such as a skin cell, a blood cell or, in this case, a sperm cell. That form of mitosis ...
... : it helps generate the epigenetic information that will prevent transposons in the genome of the neighboring sperm cells from ever getting activated.
The epigenetic instructions are small bits of ...
... and dies when the telomeres become too short.
The discovery that the egg cell can extend the telomeres of a fertilising sperm cell is important in the development of stem cell therapy. Stem cell ...
... level, we're gaining understanding of this basic question of life," Katz says.
When a sperm cell fertilizes an egg cell, the specialized programming of each parent cell must be erased, in order to ...
... even after mating are still not defeated. So their sperm become rivals. Because greater size ... chance of fertilization, in some species truly giant sperm cells have evolved – some grow to be even larger ...
... even
after mating are still not defeated. So their sperm become rivals.
Because greater size ... chance of fertilization, in
some species truly giant sperm cells have evolved – some grow to be
even larger ...
... growing early-stage sperm from human embryonic stem
cells by using retinoic acid, a vitamin ... caused them to move, and
forming recognisable sperm cells.
Nayernia, of Newcastle University and the North ...
... directly convert spermatogonial stem cells, the precursors of sperm cells, into tissues of the prostate, skin ... laboratory will eventually give rise to a few cells that look and act like embryonic stem ...
... figure out what might cause sperm cells to revert or dedifferentiate, Matunis's research team ... Jak and STAT in the testis. Counting the number of cells, they found that the loss of Jak-STAT caused fewer ...
... Thursday they have invented a male fertility home test kit that breaks new ground by measuring the efficiency of sperm cells -- a key factor in determining men's ability to father ...
... high-tech super-suits. In the body, sperm are the only cells that swim and, as speed is crucial to fertility, ... pocket, binding both tags at once."
"In sperm, just before the DNA starts to hypercompact ...
... study functioned well enough to generate sperm cells. "Ten to 15 percent of couples ... percent of the differentiated human embryonic stem cells were haploid after 14 days of differentiation.
The effect ...
... rape evidence that reduces part of the DNA analysis time from 24 hours to as little as 30 to 45 minutes and improves the sperm cell recovery rate by 100 percent.
