marron

HLA - ⅱ genotyping by PCR-SSP technique in application of bone marron transplantation

HLA类基因PCR-SSP分型技术在骨髓移植配型中的应用

Objective : To study the expression and the effect of TGF_ β and VEGF on the repairing bone defects and the combination of musculoperiosteal flap , bone marron and spongy bone granules in transplanted to repair the bone defects .

目的：分析转化生长因子（TGF）与血管内皮生长因子（VEGF）在肌肉骨膜瓣，松质骨颗粒及骨髓联合移植修复骨缺损中的表达及机理。

These exemptions , deductions and credits ( collectively known as " tax expenditures " ) will cost America 's Treasury some $ 1.1 trillion in forgone collections this year , reckons Donald Marron of the Tax Policy Centre ( TPC ) , a research group .

根据一家调查组织，税收政策中心的唐纳德马兰所说，今年，这些免税，减税，补助（合计称为税收支出）将使美国财政部放弃1.1兆美元的税收。