When to avoid creating surplus human embryos
نویسندگان
چکیده
منابع مشابه
When not to avoid inbreeding.
Avoidance of incestuous matings is widely reported across many animal taxa, and the adaptive value of such behavior is explained through inbreeding depression. However, an old and somewhat neglected theoretical result predicts that inbred matings offer another, positive effect on the inclusive fitness of parents: an individual who mates with a relative will help that relative to spread genes id...
متن کاملPitfalls to avoid when merging information systems.
When healthcare organizations merge, their goal often is to improve operational efficiencies, with information systems (IS) a common target for cost reduction. These cost reductions usually are achieved by reducing staff, consolidating data centers, establishing standardized systems, and sharing resources throughout the system. During this process, however, several common pitfalls can cause mer...
متن کاملWhen Can Martingales Avoid Ruin?
We provide conditions that guarantee for a discrete time martingale Mn, either limn→∞Mn exists, or both lim supn→∞Mn = ∞ and lim infn→∞Mn = −∞, a.s. on sample paths. A sufficient condition on the martingale is a uniform control on the ratio of the L2 and L1 norms of the increments. Near-symmetry of the increments provides an alternative condition. We also discuss a counterexample when these con...
متن کاملPatients' Attitudes towards the Surplus Frozen Embryos in China
BACKGROUND Assisted reproductive techniques have been used in China for more than 20 years. This study investigates the attitudes of surplus embryo holders towards embryos storage and donation for medical research. METHODS A total of 363 couples who had completed in vitro fertilization (IVF) treatment and had already had biological children but who still had frozen embryos in storage were inv...
متن کاملTen Mistakes To Avoid When Injecting Botulinum Toxin.
Injection of botulinum toxin is currently the most common cosmetic procedure in the United States, and in recent years it has become-together with dermal fillers-the mainstay of therapy for the prevention and treatment of facial aging. However, in some cases the treatment may lead to a somewhat unnatural appearance, usually caused by loss of facial expression or other telltale signs. In the pre...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Human Reproduction
سال: 2004
ISSN: 1460-2350,0268-1161
DOI: 10.1093/humrep/deh476