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383385 occurrences (No.47 in the rank) during 5 years in the PubMed. [no cache] 500 found

369) Our results indicate that the integrity of sperm head membranes after Percoll separation is important for successful embryo development in vitro, more so than sperm motility.

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PMID:23659202 DOI:10.1017/S0967199413000208

2015 Zygote (Cambridge, England)

* Centrifugation on Percoll density gradient enhances motility, membrane integrity and in vitro fertilizing ability of frozen-thawed boar sperm.

- The effects of Percoll density gradient centrifugation on sperm quality, in vitro fertilizability and developmental capacity of frozen-thawed boar sperm were evaluated. Two-step density gradient centrifugation by Percoll enhanced significantly the motility parameters of sperm compared with a simple centrifugation procedure. Percentages of motile sperm and sperm with intact plasma and acrosome membranes after Percoll separation were significantly greater than those after simple centrifugation. The rates of penetration, cleavage and blastocyst formation after in vitro fertilization were significantly improved by Percoll separation compared with simple centrifugation and were influenced positively by the intactness of sperm head membranes, but not any sperm motility parameters. However, insemination with increased concentrations of sperm prepared by Percoll gradient centrifugation did not improve the success of fertilization and embryo development in vitro. Our results indicate that the integrity of sperm head membranes after Percoll separation is important for successful embryo development in vitro, more so than sperm motility.

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(1)236 of	(6)6 was	(11)3 and/or	(16)2 on
(2)59 and	(7)5 as	(12)3 by	(17)2 progression,
(3)54 null	(8)4 are	(13)3 including	(18)2 to
(4)21 in	(9)4 for	(14)3 process
(5)6 is	(10)4 were	(15)2 after

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--- WordNet output for development --- =>発達, 開発, 産物, 進展 Overview of noun development The noun development has 9 senses (first 7 from tagged texts) 1. (52) development -- (act of improving by expanding or enlarging or refining; "he congratulated them on their development of a plan to meet the emergency"; "they funded research and development") 2. (46) development, evolution -- (a process in which something passes by degrees to a different stage (especially a more advanced or mature stage); "the development of his ideas took many years"; "the evolution of Greek civilization"; "the slow development of her skill as a writer") 3. (11) growth, growing, maturation, development, ontogeny, ontogenesis -- ((biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level; "he proposed an indicator of osseous development in children") 4. (9) development -- (a recent event that has some relevance for the present situation; "recent developments in Iraq"; "what a revolting development!") 5. (7) exploitation, development -- (the act of making some area of land or water more profitable or productive or useful; "the development of Alaskan resources"; "the exploitation of copper deposits") 6. (6) development -- (a district that has been developed to serve some purpose; "such land is practical for small park developments") 7. (4) development -- (a state in which things are improving; the result of developing (as in the early part of a game of chess); "after he saw the latest development he changed his mind and became a supporter"; "in chess your should take care of your development before moving your queen") 8. development, developing -- (processing a photosensitive material in order to make an image visible; "the development and printing of his pictures took only two hours") 9. development -- ((music) the section of a composition or movement (especially in sonata form) where the major musical themes are developed and elaborated) --- WordNet end ---