|
| |
| | Spermatozoa |
 | | The recovery on thawing of human spermatozoa was determined by the nature of the physical gradients encountered rather than simply the rate of cooling. | | | If similar modifications were applied to the cryopreservation of spermatozoa it would be expected that the recovery of samples would be compromised and it is therefore important to modify freezing techniques to minimise the effect of any changes in procedure. | | | Recently, a clear genetic basis for variation in freezing sensitivity of spermatozoa has been demonstrated in pigs (Thurston et al., 2001) and it will be fascinating to see if such a relationship can be established in humans. |
|
http://www.asymptote.co.uk/process/cryo/cryoguide/report/protocols/sperm.htm
(2018 words)
|
|
| |
| | Detection of Aneuploidy in Human Spermatozoa of Normal Semen Donors by Fluorescence in Situ Hybridization |
| | Spermatozoa of translocation carriers (16,17), a 46,XY147,XXY individual (18), and an XYY individual (4) have also been studied with FISH. | | | Nonisotopic in situ hybridization as a method for nondisjunction studies in human spermatozoa. | | | Environmental Health Perspectives (EHP) is a monthly journal of peer-reviewed research and news on the impact of the environment on human health. |
|
http://ehp.niehs.nih.gov/members/1996/Suppl-3/629-632lahdetie/lahdetie-full.html
(2775 words)
|
|
| |
| | Leeuwenhoek and spermatozoa |
| | His continued observations revealed enormous numbers of spermatozoa in the testicles and vasa deferentia of a wide variety of other animals (34), further confirming for Leeuwenhoek the essential identification of spermatozoa and semen. | | | Leeuwenhoek's comment footnoted immediately above might suggest that he already had in mind the idea of a preformed man in the spermatozoa, although elsewhere he similarly equated the complexity of microscopic animals in general with that of larger animals, including the human body. | | | Indeed, wrote Leeuwenhoek in 1679, there may be as many parts in the sperm asin the human body itself (41). |
|
http://zygote.swarthmore.edu/fert1a.html
(5614 words)
|
|
| |
| | Title page for ETD etd-0405103-193813 |
| | Ejaculated spermatozoa exhibited survival and zona-binding capacity similar to that of epididymal spermatozoa, and there was little variation in the survival of ejaculated spermatozoa from an individual dog. | | | In Experiment IV, ejaculated spermatozoa from each of three dogs and epididymal spermatozoa from each of four other dogs were suspended in glycerol and were frozen and thawed as in Experiment III. | | | In this study, I evaluated the cryopreservation by pellet freezing of spermatozoa from individual dogs. |
|
http://etd.lsu.edu/docs/available/etd-0405103-193813
(347 words)
|
|
| |
| | Relationships between Seminal Plasma Proteins and Boar Fertility: |
| | The total number of spermatozoa per ejaculate was analyzed with analysis of variance procedures for repeated measures in a factorial arrangement of treatments (Gill and Hafs, 1971). | | | Consequently, the objective of this study was to examine the influence of the age at which semen collection regimens were initiated on production of spermatozoa in boars. | | | Total number of spermatozoa per ejaculate increased then appeared to plateau for each treatment combination. |
|
http://mark.asci.ncsu.edu/swinereports/2001/05physflow.htm
(1216 words)
|
|
| |
| | * Spermatozoa - (Sexuality): Definition |
| | Maybe due to testicle related problems, or to an obstruction of the channel that allows the sperm to get out of the body, the spermatic level may not contain spermatozoa... | | | Velocity and Survival of Human Spermatozoa as Related to Temperatures above Zero. | | | Pre-seminal fluid is nature's way of moistening the canal of the urethra so that the spermatozoa can swim more easily out of it; it also lubricates the head of the penis... |
|
http://www.bestknows.com/sexuality/spermatozoa.html
(446 words)
|
|
| |
| | UNSW Embryo- Acrosome OMIM ENTRY 102530 |
| | Kullander, S.; Rausing, A. On round-headed human spermatozoa. | | | (1983) found that the round-headed spermatozoa of an infertile patient with globozoospermia lacked the constituting components of the outer acrosomal membrane as well as the intraacrosomal acrosin system (see 102480). | | | (1977) observed acrosome malformations of spermatids and spermatozoa in the testes of 2 infertile males who were investigated by light and electron microscopy. |
|
http://embryology.med.unsw.edu.au/OMIMfind/fert/102530.htm
(534 words)
|
|
| |
| | Animal - Wikipedia, the free encyclopedia |
| | These fuse to form zygotes, which develop into new individuals. | | | Nearly all animals undergo some form of sexual reproduction. | | | They have a few specialized reproductive cells, which undergo meiosis to produce smaller motile spermatozoa or larger non-motile ova. |
|
http://en.wikipedia.org/wiki/Animal
(1889 words)
|
|
| |
| | IP21 / BOVINE SPERMATOZOA CYTOTOXICITY TEST |
| | TO OBTAIN DETAILED PROTOCOL YOU SHOULD FIRST REGISTER AT Protocol no. 21 | | | (1981) A simple method to measure drug effects on human spermatozoa motility. | | | Existing methods are either subjective and inaccurate (direct microscopic observation) or too time consuming, such as cinemicrographic and photomicrographic techniques, non-automatic videomicrographic approaches, and combination of cinematography and computer image analysis. |
|
http://embryo.ib.amwaw.edu.pl/invittox/prot/21.htm
(1238 words)
|
|
| |
| | HIV particles detected in spermatozoa of patients with AIDS. |
| | HIV particles detected in spermatozoa of patients with AIDS. | | | The state of the art may have changed since the publication date. | | | In this paper the Authors describe the presence of HIV particles on and in mature spermatozoa either ejaculated by AIDS patients or incubated in vitro with HIV. |
|
http://www.aegis.com/aidsline/1991/oct/M91A0606.html
(387 words)
|
|
| |
| | 12. PRESERVATION OF SPERMATOZOA AND OVA |
| | The most crucial aspects of gametes, which are of practical significance in aquaculture, pertain to survival and motility of spermatozoa. | | | The sperm, which is immotile in the testis, becomes motile on contact with the medium in which fertilization takes place. | | | Details concerning the ratios of diluent and cryoprotectant used, freezing rate, storage and thawing techniques have been reviewed by Harvey and Hoar (1979). |
|
http://www.fao.org/docrep/X5742E/x5742e0d.htm
(829 words)
|
|
| |
| | Bruemmer et al., January 2002 |
| | The last experiment evaluated the fertilizing potential of cooled spermatozoa. | | | The third experiment attempted to determine the optimal pyruvate concentration to maintain spermatozoal motility. | | | Stallion spermatozoa cooled for 48 h tend to be both less motile or fertile than spermatozoa cooled for only 24 h or used fresh. |
|
http://www.asas.org/jas/abs/2002/a0210012.htm
(449 words)
|
|
| |
| | Ptiliid Spermatozoa |
| | Spermatozoa within Ptiliidae vary greatly in size and design, and have proven to be useful characters when determining and defining species. | | | The authors also demonstrate how diagnostic characters of Bambara spermatozoa provide useful characters for identifying species. | | | Baccetti and De Coninck (1989) describe "the first aflagellate and immotile Coleopteran spermatozoon", which lack mitochondria, flagellum and centrioles. |
|
http://tolweb.org/accessory/Ptiliid_Spermatozoa?acc_id=427
(267 words)
|
|
| |
| | Male Reproductive 1 |
| | Spermatozoa are produced in the testes then transported from the testes by a series of ducts which become gradually larger and connect with the urethra of the penis. | | | The primary function of the male reproductive system is reproduction, which includes the production of spermatozoa, the transportation of spermatozoa from the testes out of the male body, the secretion by glands, and the placement of spermatozoa in the female reproductive tract. | | | Various accessory glands in the male system secrete materials which together with the spermatozoa constitutes the semen. |
|
http://www.cvm.okstate.edu/instruction/mm_curr/histology/MR/himrp1.htm
(275 words)
|
|
| |
| | Process and apparatus for sorting spermatozoa (US5514537) |
| | The size of the smaller beads is chosen such that, on average, Y-chromosome spermatozoa will readily fit into the interstices between the smaller beads, while X-chromosome spermatozoa, on average, will not readily fit into those interstices. | | | Because of their different DNA content, Y-chromosome spermatozoa are slightly smaller than X-chromosome spermatozoa. | | | A method and apparatus are disclosed for the mechanical sorting of mammalian spermatozoa by sex-type, into a fraction enriched in X-chromosome-bearing spermatozoa, and a fraction enriched in Y-chromosome-bearing spermatozoa. |
|
http://www.delphion.com/details?&pn=US05514537__
(535 words)
|
|
| |
| | The Presence Of Spermatozoa In Eggs As Proof That Drones Can Develop From Inseminated Eggs Of The Honeybee. |
| | Spermatozoa Were Found In Only One Out Of The 62 Eggs Taken From Drone Cells, In Those From Worker Cells The Number Of Spermatozoa Ranged From 1 To 8, In Proportions 60-65%, 20%, 10%, 2%, 1%, 0.5%, 0.0%, 0.5%. | | | No Relation Was Found Between The Number Of Spermatozoa In The Spermatheca (Deduced From The Amount Of Semen) And The Number In Eggs Laid By The Same Queen. | | | A Low Percentage Of Eggs Containing Only 1-2 Spermatozoa Was Correlated With A High Maximum Number Of Spermatozoa In Other Eggs Of The Same Queen. |
|
http://alembic.nal.usda.gov:8088/30222.htm
(180 words)
|
|
| |
| | Spermatozoa |
| | BMJ collections list the most recent BMJ articles (usually with links to the full-text) in a subject area or speciality, and also link to relevant books and journals from the BMJ Publishing Group. | | | Spermatozoa; Sperm Count; Oligospermia; Collected Works [Publication Type]; |
|
http://omni.ac.uk/browse/mesh/D013094.html
(53 words)
|
|
| |
| | spermatozoa |
| | stallions; spermatozoa; semen; reproductive organs; male fertility; horses; fertility; clinical examination; breeding; | | | This document is in PDF, which requires Adobe Acrobat Reader, and is 4 pages long. |
|
http://vetgate.ac.uk/browse/cabi/9a7e0503b7cdde0fc5535ca095f15783.html
(274 words)
|
|
| |
| | New Gibraltar Encyclopedia of Progressive Rock AM-AQ |
| | The whole thing is a bit too cumbersome to be taken in one go and as a whole as fragmentary as what it is suppose to portray, the contemporary United States in the turbulence of information revolution and the utopian and dystopian effects it has on the society trying to cope with it. | | | The music is primarily for avant-garde fans, but even a more conservative progressive rock fan may like some of the songs, or at least be struck by some of the bizarre imagery of Anderson's stories, such as that of spermatozoa the size of sperm whales swimming across the Pacific at mach 20. | | | Mister Heartbreak is often regarded as Anderson's artistic and popular peak. |
|
http://www.gepr.net/am.html
(14538 words)
|
|
| |
| | Spermatozoa Records |
| | Please click here to visit: Spermatozoa Records - spermatozoa.vze.com. |
|
http://www.spermatozoa.vze.com
(44 words)
|
|
|
