منابع مشابه
Sperm and ova as property.
To whom do sperm and ova belong? Few tissues are produced by the human body with more waste than the germ cells. Yet dominion over the germ cells, and over the early embryo that results from their union in vitro, is behind much of the emotion that modern reproductive intervention can engender. The germ cells differ from other human tissues that can be donated or transplanted because they carry ...
متن کاملDetection of sperm antigens on mouse ova and early embryos.
Serum and colostrum antibodies against mouse sperm were developed in two rabbits after systemic and mammary gland immunizations. Indirect immunofluorescence utilizing fluorescein-labeled goat antisera against rabbit IgG and IgA, respectively, indicated that both immune serum (IS) and colostrum (Xl compared with control samples caused intensive staining of the acrosome and tail of sperm. Absorpt...
متن کاملasymptotic property of order statistics and sample quntile
چکیده: فرض کنید که تابعی از اپسیلون یک مجموع نامتناهی از احتمالات موزون مربوط به مجموع های جزئی براساس یک دنباله از متغیرهای تصادفی مستقل و همتوزیع باشد، و همچنین فرض کنید توابعی مانند g و h وجود دارند که هرگاه امید ریاضی توان دوم x متناهی و امیدریاضی x صفر باشد، در این صورت می توان حد حاصلضرب این توابع را بصورت تابعی از امید ریاضی توان دوم x نوشت. حالت عکس نیز برقرار است. همچنین ما با استفاده...
15 صفحه اولThe coevolution of ova defensiveness with sperm competitiveness in house mice.
Theoretical models have suggested that sperm competition can lead to increased ova resistance to fertilization. While there is some comparative evidence that this might be true, there is no experimental evidence to show that ova defensiveness evolves in response to sperm competition. We performed a series of in vitro fertilization assays to gauge the fertilizability of ova produced by female ho...
متن کاملShapes as property restrictions and property-based similarity
In this work we look into the details of modeling shapes in an ontology as property restrictions on classes. In this way shapes do not have to be categorized in an exhaustive hierarchy and there is no need to take immediate decisions on how to group the objects, it is rather possible to individualize some important characteristics of shapes and use them as the basis for their categorization and...
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: Journal of Medical Ethics
سال: 1985
ISSN: 0306-6800
DOI: 10.1136/jme.11.3.123