Zobrazeno 1 - 10
of 26
pro vyhledávání: '"S. M. Willadsen"'
Autor:
S. M. Willadsen
Publikováno v:
Mammalian Egg Transfer ISBN: 9781351074230
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e093a2afa16c09a02114b7790a70aad
https://doi.org/10.1201/9781351074230-11
https://doi.org/10.1201/9781351074230-11
Autor:
S. M. Willadsen
Publikováno v:
Ciba Foundation Symposium 52-The Freezing of Mammalian Embryos
The survival of sheep morulae and early blastocysts after deep freezing has been investigated. With a dimethyl sulphoxide concentration of 1.5 M in a phosphate-buffered saline medium, a freezing rate of 1 degreees C/min down to 120 degees C allowed e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::318ac06e3a692899c8f084f57538aa62
https://doi.org/10.1002/9780470720332.ch9
https://doi.org/10.1002/9780470720332.ch9
Publikováno v:
Development. 56:319-335
Pronuclear development was used to measure the effects on ovine oocytes of altering follicular steroidogenesis during maturation in vitro. Follicular steroid secretion was altered using enzyme inhibitors and exogenous steroid supplementation. Abnorma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ba647c50a4098550e0366926ce04fde
https://doi.org/10.1242/dev.56.1.319
https://doi.org/10.1242/dev.56.1.319
Publikováno v:
Scopus-Elsevier
Cow morulae cultured in a phosphate-buffered medium containing serum developed normally and retained viability when transferred to recipients. Unlike earlier cleavage stages, cow blastocysts tolerated cooling to 0 degrees C and retained viability aft
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9734d78f05aa24d44f692cbe5961c28
https://doi.org/10.1530/jrf.0.0470367
https://doi.org/10.1530/jrf.0.0470367
Publikováno v:
Reproduction. 74:215-221
Aggregation chimaeras were composed of quarter (or 1 cell) contributions from 4-cell blastocysts of sheep or goats, or of an 8-cell blastocyst of one species enveloped in three 8-cell blastocysts of the other. Gestation was in sheep or goat recipient
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8236554661fd342c2b8f8aad1ef903ae
https://doi.org/10.1530/jrf.0.0740215
https://doi.org/10.1530/jrf.0.0740215
Autor:
S. M. Willadsen
Publikováno v:
Development. 65:165-172
The developmental capacity of (a) single blastomeres of 4-cell embryos, (b) pairs of blastomeres of 8-cell embryos and (c) single blastomeres of 8-cell embryos was studied. The blastomeres were inserted into evacuated foreign zonae pellucidae, embedd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd216314b322e802483e15fad750fd93
https://doi.org/10.1242/dev.65.1.165
https://doi.org/10.1242/dev.65.1.165
Publikováno v:
Reproduction. 70:347-351
Composite sheep embryos (N = 110) were produced by aggregation of blastomeres from 2-, 4- or 8-cell embryos. Each composite embryo consisted of equal numbers of blastomeres from 2-8 parent embryos, the total cell number ranging from one quarter of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::150b1e1884d991753b42342e0b7296b3
https://doi.org/10.1530/jrf.0.0700347
https://doi.org/10.1530/jrf.0.0700347
Publikováno v:
Scopus-Elsevier
When 23 10-16 week-old Welsh Mountain lambs were treated with PMSG 19 ovulated, the number of eggs ovulated being directly correlated with the duration of progesterone pretreatment (0-5 +/- 0-29 (S.E.M.) after 3 days; 7-8 +/- 3-47 after 18 days). Inj
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67a9309eb1ada2f65093808a58388b7b
https://doi.org/10.1530/jrf.0.0490069
https://doi.org/10.1530/jrf.0.0490069
Effect of prostaglandin analogue Cloprostenol on oestrus, ovulation and embryonic viability in sheep
Publikováno v:
The Journal of Agricultural Science. 86:609-611
SummaryThe effect of a single injection of 100 μg prostaglandin analogue Cloprostenol, during the luteal phase of the oestrous cycle was examined for synchronization of oestrus, time of ovulation and embryonic viability in ewes.Following injection o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::535191fc28724d98b1640e63cbad0fbb
https://doi.org/10.1017/s0021859600061177
https://doi.org/10.1017/s0021859600061177
Autor:
S. M. Willadsen
Publikováno v:
Nature. 277:298-300
MICROSURGICAL techniques have proved valuable for investigations of the regulatory capacity of early mammalian embryos, including the developmental potential of single blastomeres from two-, four- and eight-celled embryos (see ref. 1 for review). How
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f95183bb914e64bcc707b980a8c5498
https://doi.org/10.1038/277298a0
https://doi.org/10.1038/277298a0