Micromanipulation of Human Gametes and Embryos
نویسندگان
چکیده
منابع مشابه
Smoking and reproduction: gene damage to human gametes and embryos.
Assisted conception is a useful methodology for detecting disturbances in clinical outcome, meiotic maturation, and genetic integrity of human gametes. Germinal cells are vulnerable to genetic damage from smoking, but can repair damage during meiosis. In ejaculated spermatozoa, repair capacity declines drastically. Smoking alters the meiotic spindle of oocytes and spermatozoa, leading to chromo...
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Ascidians are basal chordates that have become increasingly important for understanding chordate evolution. They comprise three orders. In the orders Phlebobranchia and Stolidobranchia, most species freely spawn eggs and sperm, whereas members of the order Aplousobranchia form colonies that brood their eggs and broadcast sperm. In the two free spawning orders, eggs and sperm are easily obtained...
متن کاملMammalian diversity: gametes, embryos and reproduction.
The class Mammalia is composed of approximately 4800 extant species. These mammalian species are divided into three subclasses that include the monotremes, marsupials and eutherians. Monotremes are remarkable because these mammals are born from eggs laid outside of the mother's body. Marsupial mammals have relatively short gestation periods and give birth to highly altricial young that continue...
متن کاملThe manipulation of gametes and embryos in farm animals.
This paper summarizes the major advances in farm animal assisted reproduction in the last 20 years with particular attention to the contributions of the authors. A main emphasis is on the biology of the oocyte, including a description of methods for isolation of developing follicles and culture of the corresponding oocytes. Milestones that have led to optimization of procedures for maturation o...
متن کاملWill noninvasive methods surpass invasive for assessing gametes and embryos?
The need to identify the most viable embryo following in vitro fertilization (IVF) was established early in the history of human IVF. The stalwart of identifying the best embryos has been morphology. Other techniques have however seen wide acceptance, including the use of preimplantation genetic screening, even though concerns exist over the invasive nature of the technique. Alternatively, noni...
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ژورنال
عنوان ژورنال: Journal of Medical Genetics
سال: 1993
ISSN: 1468-6244
DOI: 10.1136/jmg.30.4.351-b