Sexual reproduction involves the joining of two sex cells or gametes – the sperm (male gamete) and the egg or ovum (female gamete). The male and female reproductive system The male reproductive ...

Primordial germ cells, the founder cells of the germ line, are set aside in the early animal embryo, and divide and differentiate to produce sperm and egg, the male and female gametes. Leydig ...

Scientists have discovered how a sperm and an egg fuse together, in a way that resembles a ‘lock and key’. New research focuses on the mechanism that connects the two types of cells across ...

More than a decade ago, scientists succeeded for the first time in generating primordial germ cells—the precursors of sperm and eggs—from embryonic stem cells, a process that led to functional sperm ...

In a potential breakthrough for infertility and genetic disease treatments, scientists at Kyoto University have succeeded in mass-generating precursors to sperm and eggs from human iPS cells. Two ...

The chromosomes of sperm cells are tightly packaged into a complex ... tract and across the zona pellucida surrounding the egg. It may also be that the nucleoprotamine structure protects the ...

Specialised animal cells include red blood cells, sperm, eggs, nerve cells, muscle cells, ciliated cells, and villi. Get it, lark? Anyone…? Okay let's move on. An animal cell is made of three ...

with progress in sperm and egg selection. In the application of this latest system AI was used to position the sperm cell in the injection pipette and direct the microinjection itself within the egg.

The study, published in Cell Reports Physical Science ... impact sperm interactions with nearby surfaces, other sperm, or even the egg itself," Professor Nosrati said. The study expands on ...

The team “shows that eggs that have already begun embryonic development, and are about to divide from the one-cell to two-cell stage, still retain the ability to ‘remodel’ sperm DNA,” Hugh Clarke, a ...

It all comes down to reproductive cells. The researchers ... when engineered to have no sperm, while females have shorter life spans when doctored to have no eggs. Previous studies have found ...