| 词汇 | spermatozoon |
| 释义 | spermatozoon noun[ C ] biology specializeduk /ˌspɜː.mə.təˈzəʊ.ɒn/ us /ˌspɝː.mə.t̬əˈzoʊ.ɑːn/pluralspermatozoauk /-ə/us specialized forsperm精子（术语） Animal reproduction androgen anti-oestrogen asexuality asexually barrenness calve fertile impregnate oestrogen out-reproduce ovulate panmictic panmixia procreate procreation procreative rut semen spawn sterile You can also find related words, phrases, and synonyms in the topics: Animal physiology: bodily fluids & their production Examples of spermatozoonspermatozoon Again, this means that it is unlikely for spermatozoa to reach the uterine tube after the arrival of the oocyte. Owing to their lower affinity for the epithelium, spermatozoa that become capacitated are released from the storage site. Large numbers of mice established by in vitro fertilization with cryopreserved spermatozoa: implications and applications for genetic resource banks, mutagenesis screens and mouse backcrosses. Unprotected freezing of human spermatozoa exerts a detrimental effect on their oocyte activating capacity and chromosome integrity. Prolonged exposure to ethanol destroys this ability, but it may be possible to develop simple non-freezing methods to preserve spermatozoa for long periods of time. Eggs were put separately into droplets (0.5 xl) of fertilisation medium under paraffin oil and 10-20 capacitated spermatozoa were added. We wanted to find out whether such treatment affects the ability of the egg to complete the meiosis and to transform nuclei of spermatozoa. Production of term offspring by in vitro fertilization using old mouse spermatozoa. The status of the acrosomes of bound spermatozoa was also examined under the high power of a phase-contrast microscope. Denuded oocytes were matured in vitro, spontaneously or by progesterone treatment (1 ug/ml), and inseminated with homologous spermatozoa. When insemination began 10 min after cell fusion spermatozoa penetrated 62.5% of hybrids. Increased oxidative deoxyribonucleic acid damage in the spermatozoa of infertile male patients. However, in many cases those spermatozoa are incompetent to fertilise an egg, perhaps due to their morphological or biochemical abnormalities. The dishes were kept in the incubator for about 30-45 min until spermatozoa were added for fertilisation. The aspirated cytoplasm and the spermatozoon were then gently ejected into the cytoplasm and the needle was withdrawn. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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