منابع مشابه
Testis Cancer: Genes, Environment, Hormones
Testicular cancer (TC) is the most common cancer in males aged 20–40 years, with a worldwide incidence of 7.5 per 100,000, but the rates vary considerably between countries and ethnic groups and there is evidence also for an increasing incidence in last decades. About 95% of all TCs are represented by testicular germ cell tumors (TGCTs), which include seminoma and non-seminoma histological type...
متن کاملProduct Quality and Market Size1
Do larger markets offer better products? The question has implications both for theories of cities and for theories of market organization. We document that in the restaurant industry, where quality is produced largely with variable costs, the range of qualities on offer increases in market size, with each product maintaining a small market share. In daily newspapers, where quality is produced ...
متن کاملThe Sensing of Retinal Size1
This study examines the interpretation that under reduced conditions of observationthe perceived size of an object is the result of a direct response to retinal size. In opposition to thisinterpre~tion is the size-distance invariance hypothesis stating that a perceived size results from aretinal size only when an appropriate perceived distance is also present. Four experiments were<...
متن کاملCancer/Testis genes in relation to sperm biology and function
Cancer testis antigens (CTAs), a large family of tumor-associated and immunogenic antigens expressed in human tumors of various histological origins, are highly restricted to the testis and trophoblast. CTAs have been identified as potent targets for tumor-specific immunotherapeutic advances and have immensely lead to the development of different clinical trials of CTA-based vaccine therapy bec...
متن کاملCytoskeletal genes regulating brain size.
One of the most notable trends in human evolution is the dramatic increase in brain size that has occurred in the great ape clade, culminating in humans. Of particular interest is the vast expanse of the cerebral cortex, which is believed to have resulted in our ability to perform higher cognitive functions. Recent investigations of congenital microcephaly in humans have resulted in the identif...
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ژورنال
عنوان ژورنال: Biology of Reproduction
سال: 1992
ISSN: 0006-3363,1529-7268
DOI: 10.1095/biolreprod47.1.29