U.S. Seconds Australia with Frozen Embryos

Science News ◽  
1984 ◽  
Vol 125 (17) ◽  
pp. 261
Author(s):  
D. Franklin
Keyword(s):  
Frozen Embryos

Serum levels of E2 and hCG rise at a faster rate in pregnancies arising from the replacement of fresh rather than frozen embryos

1998 ◽  
Vol 5 (1) ◽  
pp. 142A-142A
Author(s):  
S SPANDORFER ◽  
A KOWALIK ◽  
H LIU ◽  
G SCHATTMAN ◽  
L VEECK ◽  
...  
Keyword(s):  
Serum Levels ◽  
Frozen Embryos

When Does a Right to Life Arise?

2019 ◽  
pp. 47-64
Author(s):  
Lynn D. Wardle
Keyword(s):  
Severe Disabilities ◽  
State Regulation ◽  
Biological Science ◽  
Human Being ◽  
Right To Life ◽  
Legal Rules ◽  
Frozen Embryos ◽  
The Right ◽  
Legal Right

The question of when a legal right to life first arises in the course of a human being’s development is pertinent to a variety of contexts, including protection of prenatal life from injury by persons other than the gestational mother, what to do with frozen embryos when the couple who created them divorces, and how to treat children born with severe disabilities, as well as the more familiar context of state regulation, restriction, or prohibition of abortion. This chapter first summarizes social and biological science findings relevant to this question, then details development of legal rules and constitutional doctrine pertaining to abortion regulation before contrasting that with protections for prenatal life in other contexts. It concludes that the most coherent answer to the question when a right to life arises is that the right to life is coextensive with the biological life of the human being, and that a legal right to remain alive arises when a human being comes into existence and continues until it ceases to be a human being—that is, when its life has ended. This might provide justification for greater restrictions on abortion, but that could depend on additional considerations.

Unmet communication needs and moral work in the disposition decision concerning surplus frozen embryos: The perspectives of IVF users

2021 ◽  
pp. 113804
Author(s):  
Aviad Raz ◽  
Yasmin Vardi ◽  
Shelly Vain ◽  
Amir Meiri ◽  
Gali Barkan ◽  
...  
Keyword(s):  
Frozen Embryos ◽  
Communication Needs

scholarly journals Influence of post-thaw culture on the developmental potential of human frozen embryos

2012 ◽  
Vol 29 (8) ◽  
pp. 789-795 ◽  
Author(s):  
Mafalda L. Rato ◽  
António Gouveia-Oliveira ◽  
Carlos E. Plancha
Keyword(s):  
Developmental Potential ◽  
Frozen Embryos

scholarly journals 183PREGNANCY RATE FOLLOWING TRANSFER OF IN VITRO- AND IN VIVO-PRODUCED BOVINE EMBRYOS TO LH-TREATED RECIPIENTS

2004 ◽  
Vol 16 (2) ◽  
pp. 213 ◽  
Author(s):  
J. Small ◽  
M. Colazo ◽  
D. Ambrose ◽  
R. Mapletoft ◽  
J. Reeb ◽  
...  
Keyword(s):  
Pregnancy Rate ◽  
Animal Health ◽  
Beef Cows ◽  
Water Bath ◽  
Bovine Embryos ◽  
Chi Square ◽  
Embryo Survival ◽  
Frozen Embryos

The objective was to evaluate the effect of pLH treatment on pregnancy rates in recipients receiving in vivo- or in vitro-produced bovine embryos. Heifers (n=37) and lactating (n=28) and non-lactating (n=150) beef cows were treated at random stages of the cycle with 100μg GnRH i.m. (Cystorelin, Merial Canada Inc., Victoriaville, Quebec, Canada) on Day −9, 500μg cloprostenol i.m. (PGF; Estrumate, Schering Plough Animal Health, Pointe-Claire, Quebec, Canada) on Day —2 and GnRH on Day 0 (66h post-PGF; without estrus detection). Cattle were placed at random, by class, into three groups: no further treatment (Control; n=71), or 12.5mg pLH (Lutropin-V, Bioniche Animal Health, Belleville, Ontario, Canada) on Day 5 (n=72) or on Day 7 (n=72) after the second GnRH. On Day 7, cattle with a CL >10mm in diameter (determined ultrasonically) received in vivo-produced, fresh (Simmental) or frozen (Holstein), or in vitro-produced frozen (Holstein) embryos (embryo type balanced among groups). Embryos were cryopreserved in 10% ethylene glycol; in vivo-produced frozen embryos were thawed 5 to 10s in air, 15s in a water-bath at 30°C and then “direct-transferred” nonsurgically. In vitro-produced frozen embryos (donated by IND Lifetech Inc., Delta, British Columbia, Canada) were thawed in a water-bath at 27°C for 10s and placed in ViGro Holding Plus medium (AB Technology, Pullman, WA, USA) at room temperature, evaluated and then transferred nonsurgically. Pregnancy was determined by ultrasonography on Day 35. Data were analyzed with CATMOD, chi-square and GLM procedures (SAS Institute, Cary, NC, USA.). Twenty cattle (9.3%) did not receive embryos; five heifers had cervical problems, and five heifers and 10 cows did not have a CL >10mm. Overall, 7.1% of the recipients had two CL on the day of embryo transfer. There was no effect (P>0.05) of treatment, embryo type (or interaction) or class of recipient on pregnancy rate (overall, 44.1%, 86/195; Table 1). Similarly, mean (±SD) CL diameter and luteal area did not differ (P>0.05) among groups or between pregnant and open recipients (overall, 22.0±3.4mm and 352.0±108.7mm, respectively). However, recipients with a CL diameter ≥18mm tended (P<0.1) to have a higher pregnancy rate (45.8 vs 25.0%). In a subset of 40 recipients examined ultrasonically on Day 12, 50% of those treated on Day 5 and 70% of those treated with pLH on Day 7 had two CL. In summary, overall pregnancy rate in GnRH-synchronized recipients receiving in vitro- or in vivo-produced embryos by nonsurgical transfer was 44.1%. Embryo survival to Day 35 was not affected by type of embryo or treatment with pLH 5 or 7 days after ovulation. Table 1 Pregnancy rate in recipients on Day 35 based on pLH treatment and embryo-type

scholarly journals Experiences with nonsurgical transfer of deep frozen embryos

1980 ◽  
Vol 12 (4) ◽  
pp. 413
Author(s):  
WW Lampeter ◽  
F Graf ◽  
B Kruff
Keyword(s):  
Frozen Embryos
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