sperm

The presence of immotile sperm or sperm shaking in place and not demonstrating forward motion is suggestive of immunologically related infertility.

sperm packet Spermatophore; a mass of sperm transferred from the male to the female by a gonopodium of the Poeciliidae.

a sperm whale cannot see directly fore and aft.

The release time of apyrene sperm was early than that of eupyrene sperm.

Only one sperm fertilises an egg.

The lacinate appendages of eupyrene sperm disappeared, and the sperm was surrounded by an envelope from top to tail.

The sperm morphology analysis using semiautomated sperm morphology analyzer (ASMA) was performed.To analyze Ureaplasma urealyticum, the culture method was used.

gamone Chemicals controlling the activity of the sperm prior to and during fertilization.

Syngamy - The fusion of egg and sperm cells into a zygote.

The sperm originate in gonial cells (spermatogonia) in the walls of seminiferous tubules.

In young rats, taurine can significantly increase the motility of sperm, but has no obvious effects on the numbers of sperm, the rate of live sperm, acrosome completeness and teratosperm.

In old rats, taurine can obviously increase the numbers of sperm, the motility of sperm and the rate of live sperm, but has no significant effects on the rate of acrosome completeness and teratosperm.

To a certain degree, sperm head membrane maybe is the key factor to the androgenesis of the gynogenetic silver crucian carp eggs.

At the same moment, a sperm with one X chromosome, belonging to Raphaël Poulain, made a dash for an egg in his wife Amandine.

the end-piece of the sperm consists of the axoneme and its surrounding cytoplasm, and the axoneme has a typical "9 + 2" structure.

He has created man from a sperm-drop; and behold this same (man) becomes an open disputer!

When he judges it is safe to do so, he inserts the end of a pedipalp into the female's reproductive opening and discharges the sperm it carries.

In the adult, or medusa stage of a jellyfish, they can reproduce sexually by releasing sperm and eggs into the water, forming a planula.

More recent studies have startedfiguring out what kind of chemical attracts a sperm.

And that's important because the males use their sperm to compete.

He said that Tam was likely too old to produce good sperm.

Unlike males who are constantly producing new sperm, females have a finite number of eggs.

And finally, there's usually an abnormal smell test and sperm count as well.

If the egg is not fertilized by a sperm, estrogen and progesterone levels slowly decrease.

When did you last have a sperm analysis?

Are you still mad about the sperm bank? No.

It's time to give your sperm sample.

In addition, the Sertoli cells of the testes respond to follicle-stimulating hormone by producing more sperm.