Influence of Seminal Vesicular Fluid on Morphology of Bull Spermatozoa
نویسندگان
چکیده
منابع مشابه
The Morphology of Bull Spermatozoa
It has been known since the nineteenth century that the microscopical structure of living cells may be modified by fixation and by post-mortem or sub-mortem changes (Hardy, 1899), but inadequate attention seems to have been paid to factors which may injure spermatozoa before fixation and microscopical examination. One such factor is the effect of sudden cooling. If semen is exposed to a sudden ...
متن کاملthe influence of the neo-platonic concept of poetic imagination on wordsworth’s poetry
بر اساس نظریه افلاطون در باره شعر خلاقیت هنری مورد انتقاد قرار گرفته است. نظریه کلی در مورد شعر این بود که شعر از ظواهرتقلید میکند و نه حقیقت. چون سایه ای از حقیقت است. اما با پیدایش فلسفه نو افلاطونی، انتقاتات قبلی در مورد شعر و شاعری اصلاح شد. فلوطین در کتاب انئید، اساس خلق هنری را بر محور مُثل افلاطونی قرار داد. وی باور داشت که هنر مندان در خلق آثار هنری، تحت تاثیر مُثل افلاطونی بوده و عوالمی ...
Study of Bull Spermatozoa
The electron microscope has been used to determine the characteristic dimensions and the distribution of the dry mass in bull spermatozoa. The most important result is that all characteristic data are occurring in logarithmic distributions. Furthermore, no correlation between such parameters as head weight and tail weight or head length and tail length was found. The occurrence in logarithmic d...
متن کاملFertility of boar spermatozoa after freezing in the absence of seminal vesicular proteins.
A comparison of spermatozoa from intact boars and from boars without seminal vesicles, frozen in various diluents, was made to determine any differences in sperm quality after thawing and the conception rates of gilts. Sperm samples were frozen at -196 degrees C. 50 semen pellets were thawed after 1-3 weeks storage and assessed for postthaw motility at 37 degrees C. The percentage of eosinop...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1958
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(58)90935-4