egg and sperm), the cells are called spermatozoa. Spermatozoa have 23 chromosomes, which is half the amount of chromosomes found in a normal non-reproductive cell. The spermatozoa are then sent to the epididymis where they are stored to mature. It is inside theepididymisthat sperm develop the...
cells from this initial crop go on to become the future sperm cells, and the other half remain as stem cells so that there is a constant source of additional germ cells. Spermatogonia destined to develop into mature sperm cells are known as primary sperm cells. These move from the outer ...
Humanembryonic2stem cells(胚胎干细胞)derived3from excess IVFembryos4(晶胚)may help scientists unlock the mysteries ofinfertility5(不肥沃,不毛)for other couples struggling toconceive(构思,怀孕),according to new research from the Stanford University School of Medicine. Researchers at the school have d...
Researchers from the Chinese Academy ofSciences have successfully created functional sperm cells from mousestem cells in the laboratory, then implanted those cells intorodents' egg cells to produce healthy, fertile offspring. While a lotmore work needs to be done before human trails could be consider...
Background The recent success in the derivation of differentiated cell types from stem cells has raised prospects for the application of regenerative cell ... B.,Lawrenz,H.,... - 《Cytotherapy》 被引量: 132发表: 2009年 Reversing the Life Cycle: Medusae Transforming into Polyps and Cell Transd...
Some cells are set up to become stem cells, which will then have the potential to develop into any type of cell in the body. And some cells in the fetus become primordial germ cells and eventually evolve into the cells of either sperm or eggs, which will allow this offspring to pass th...
Profile: Researchers develop method of using mouse stem cells to create mouse sperm cellsROBERT SIEGEL, MELISSA BLOCK
This experiment is the first time artificial embryos have started to develop into fetal tissue in a uterus. Other groups have made artificial mouse embryos from stem cells but they haven’t successfully implanted or have only been able to form placental cells but not the other cell ...
These distal centrioles will develop into flagellum while the proximal centrioles and pericentriolar matrix will eventually develop into head-tail coupling apparatus, which connects the sperm head and tail axoneme. In the second phase, also known as cap phase (Step 4-7), both the tail axone...
These authors also performed intra-cytoplasmic sperm injection using Prm2-deficient sperm; however few eggs were able to develop to the blastocyst stage. Cho et al.5,6 were unable to obtain Prm1+/− or Prm2+/− heterozygous mice using natural mating or intracytoplasmic sperm injection. ...