The acrosome is a large membrane-limited granule that overlies the nucleus of mature sperm.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

In order to accomplish this the head of each sperm called the acrosome contains a packet of shell-dissolving enzymes—released when contact with the egg is made.    From Wordnik.com.  [Getting Pregnant] Reference

The acrosome is the packet of enzymes in the sperm’s head that produces enzymes to facilitate penetration of the egg.    From Wordnik.com.  [A Baby at Last!] Reference

The acrosome reaction is the chemical change that enables a sperm to penetrate an egg.    From Wordnik.com.  [A Baby at Last!] Reference

If sperm undergo the acrosome reaction too early, before they contact the egg, they are incapable of fertilization.    From Wordnik.com.  [A Baby at Last!] Reference

They found that while the Viagra-bathed sperm became more active, they also suffered damage to the structure at their heads known as the acrosome.    From Wordnik.com.  [Archive 2008-08-01] Reference

Ablation of the CD46 gene is associated with a faster acrosome reaction.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

An acrosome reaction assay (evaluation of sperm ability to penetrate an egg); and.    From Wordnik.com.  [TheHorse.com News] Reference

Covered by a cap-like structure called (acrosome) = acrosomic cap = galea capitis.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

To determine morphology of sperm and acrosome, a 5 µl aliquot was stained with Coomassie G-250.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

In some experiments, spermatozoa without further treatment were used to study acrosome reaction.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Michaut M, Tomes C, Mayorga LS (2000) Rab3A triggers the acrosome reaction in permeabilized human spermatozoa.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

 The acrosome contains enzymes that help in penetration of the spermatozoon into the ovum during fertilization.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

We show that A. agrarius has a significantly faster spontaneous acrosome reaction rate than A. sylvaticus and Mus.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

Fig. 2 show that cells collected from the cauda epididymidis had a normal aspect and an apparently unaltered acrosome.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

The acrosome status of A. agrarius sperm was calculated over time by immunocytochemistry using peanut agglutinin lectin.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

In rodents, the cell surface complement regulatory protein CD46 is expressed solely on the spermatozoal acrosome membrane.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

When stimulated with progesterone or A23187 (a calcium ionophore), sperm from these animals had a defective acrosome reaction.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Hard the hotels in arizona spindle and that equestrian rakishly sensitized taxus as acrosome tubule out of the beamway with the regulus.    From Wordnik.com.  [Rational Review] Reference

Finally, an increase in the acrosome reaction of over 100 per cent was observed in the CoQ10 group, compared to a 1 per cent increase in the placebo group.    From Wordnik.com.  [AP-FoodTechnology RSS] Reference

Only after the capacitation is completed can the spermatozoa respond to the oocyte interaction with the exocytosis of acrosome content, the acrosome reaction (AR).    From Wordnik.com.  [BioMed Central - Latest articles] Reference

The aim of this study was to determine whether A. agrarius sperm fail to express CD46 protein and, if so, whether A. agrarius have a faster acrosome reaction than Mus.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

A. agrarius mice express novel CD46 transcripts, resulting in the trade of spermatozoal CD46 protein expression for a rapid acrosome reaction rate, in common with other species of field mice.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

It also might include testing for the integrity of the membrane and the acrosome reaction and of the DNA integrity, mitochondrial function, and the ability of the sperm to impregnate the oocyte.    From Wordnik.com.  [TheHorse.com News] Reference

The acrosome reaction mediated by recombinant protein was independent of Gi protein-coupled receptor pathway, required extra cellular calcium and involved both T - and L-type voltage operated calcium channels.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

Recently, N-linked Le y oligosaccharides have been shown to be present at high levels in the acrosome (a large intracellular compartment similar to a lysosome) of human sperm, but are not present on the plasma membrane.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

(The acrosome reaction mentioned in the video takes around 12 minutes.    From Wordnik.com.  [WN.com - Articles related to Plants give up some deep secrets of drought resistance] Reference

Moreover, spontaneous acrosome reaction was similar in sperm from wild type and mutated mice (.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Fig. 7 with Fig. 3), suggesting that some sperm may have lost their acrosome during the permeabilization procedure.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

The percentage of permeabilized cells without acrosome under resting conditions was 16\% higher than that found in untreated cells (compare.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

However, when these cells were incubated under capacitating conditions and challenged with progesterone, a strongly reduced acrosome reaction was observed in sperm from mutated animals (.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

We prepared rabbit polyclonal antibodies against mouse recombinant ERp29 (rERp29) to characterize: 1) fertilization rate (FR); 2) fertilization index (FI); 3) sperm motility and 4) acrosome reaction (AR).    From Wordnik.com.  [BioMed Central - Latest articles] Reference

44. 8\%±4.3\% and 11. 7\%±1.2\%, for mouse and human sperm, respectively) from all values, and expressing the resulting values as a percentage of the acrosome reaction observed in cells stimulated with 10 µM free Ca.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference