When insemination began 10 min after cell fusion spermatozoa penetrated 62.5% of hybrids.
The status of the acrosomes of bound spermatozoa was also examined under the high power of a phase-contrast microscope.
Production of term offspring by in vitro fertilization using old mouse spermatozoa.
We wanted to find out whether such treatment affects the ability of the egg to complete the meiosis and to transform nuclei of spermatozoa.
Effects of various enzymes on the ability of hamster egg plasma membranes to fuse with spermatozoa.
This means that capacitated spermatozoa arrive in the uterine tube shortly before the oocyte.
Eggs were put separately into droplets (0.5 xl) of fertilisation medium under paraffin oil and 10-20 capacitated spermatozoa were added.
Finally, during our observations of seminal receptacle we did not observe any bacterial endosymbionts in the spermatozoa.
