نتایج جستجو برای: pleuropulmonary blastoma
تعداد نتایج: 660 فیلتر نتایج به سال:
Neuroblastoma is the most common extracranial solid tumor in children, accounting for 7% to 8% of all childhood cancers. The prevalence is about 1 case per 7,000 live births. This incidence is fairly uniform throughout the world, at least for industrialized nations. Neuro‐ blastoma is slightly more common in boys than in girls, with a male-to-female sex ratio of 1.1 to 1 in most large studies [...
comment. that histologically the majority of glioma retinae -appear to originate in the inner nuclea layer, a few in the ganglion cell and nerve fibre. layer. They discuss the formation of rosettes as attempts at partial differentiation. to a form imitating more or less closely the primitive epithelium of the neural tube rather than the highly specialized rod and cone cells. For what it is wort...
In order to evaluate the genetic diversity and genetic structure of wild Dipsacus asperoides, we surveyed genetic polymorphisms in 288 individuals from 12 populations using ISSR. A total of 240 bands were amplified, among which 190 were polymorphic loci. At the species level, genetic diversity was found to be abundant: PPB = 79.17%, NE = 1.2152, H = 0.1361, and Hsp = 0.2213. At the population l...
Rheum officinale Baill., an important but endangered medicinal herb, is endemic to China. Inter-simple sequence repeat (ISSR) markers were employed to investigate the genetic diversity and differentiation of 12 populations of R. officinale. Thirteen selected primers yielded 189 bright and discernible bands, with an average of 14.54 per primer. The genetic diversity was low at the population lev...
Backgroud: Pleuropulmonary blastoma (PPB) is a very rare malignant tumor of the pleuropulmonary mesenchyme in childhood. This report retrospectively analyzed PPB in four larger Chinese pediatric oncology centers in recent years. And provide a basis for multicenter collaborative treatment of PPB in China. Methods: This analysis concerns patients aged 0-18 years with confirmed to have PPB by path...
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