نتایج جستجو برای: embryo research
تعداد نتایج: 1466519 فیلتر نتایج به سال:
Embryonic stem cell research is considered one of wonderful developments in medical arena and scientific achievements contributing to the treatment of many diseases. Due to its important legal consequences, its analysis of vital importance. One of the theories proposed to justify the research is Medical Self-Defense. This theory purports that when a disease attacks a person and there is no esca...
Recent advances in reprogramming technology do not bypass the ethical challenge of embryo sacrifice. Induced pluripotent stem cell (iPS) research has been and almost certainly will continue to be conducted within the context of embryo sacrifice. If human embryos have moral status as human beings, then participation in iPS research renders one morally complicit in their destruction; if human emb...
The period while embryo is taking form is an essential process in human’s growth. The embryo is very sensitive to the womb’s environment as such that any damages during this period can have irreparable effects on it. Teratogen is a name given for damaging factors to the embryo during the pregnancy. Generally, Teratogen Include environmental and mother-related factors. However, the precise ana...
background: polycystic ovaries syndrome (pcos) is the most common disorder in infertile women with ovulation sterility. there are some instances of abnormal endocrine in the women stricken by this syndrome and so the clinical results of ovulating induction in them, because of severe response of ovary against ovulating induction, are very discussing and may lead to different results from those w...
Background: In recent years, many progresses have been confirmed in the field of medicine. Transplantation is one of the instances which have had rapid improvements. Human and nonhuman organs and tissues, embryo, fetus and even the human stem cells have been used for transplantation. The researches in this field have lead to the more functional and new methods. Regarding the ethical problems ...
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...
Background: Controlled ovarian stimulation (COS) has been shown to advance endometrial maturation and affect adversely implantation in assisted reproduction technology (ART) cycles. It has been reported that there is a better embryo-endometrium synchrony in frozenthawed embryo transfer (FET) cycles than fresh embryo transfer (ET) cycles. The Background of this study was to compare ongoing pregn...
background: in this feasibility study, a mechanically loaded in-vitro tissue culture model of joint morphogenesis using the isolated lower extremity of the 8 day old chick embryo was developed to assess the effects of mechanical loading on joint morphogenesis. methods: the developed in-vitro system allows controlled flexion and extension of the chick embryonic knee with a range of motion of 20 ...
Apart from the huge efforts made to develop an embryo in-vitro, the embryologist is faced with an even bigger task to choose an embryo from a cohort that will produce pregnancy. Selecting a single viable one is often a challenge to the embryologists and clinicians involved. This is because the one that is selected may determine outcome of the cycle. It is not in the embryologist interest to cho...
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