Object: to summarize the experience of diagnosis and treatment of langerhans cell histiocytosis (LCH).

目的：总结郎格罕氏组织细胞增生症(LCH)的诊断与治疗经验。

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All listed shares are traded on a single electronic platform under harmonized market rules, and are cleared through a single system, operated by LCH.

所有上市的股票都经过市场规则的协调用专门的电子平台交易，通过专门的系统进行清算，选择lch。

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Objective To improve the identification of Langerhans cell histiocytosis (LCH).

目的提高对郎格罕组织细胞增生症（LCH）的认识。

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Not to be outdone, local competitor Singapore Exchange (SGX) was in the news last month with regards to an acquisition of UK-based clearing house LCH.

FORBES: Asia The Next Frontier For Stock Exchange Consolidation

The UK's competition regulator has given the London Stock Exchange Group the go-ahead for its planned takeover of clearing house LCH Clearnet.

BBC: LSE cleared by OFT to buy LCH Clearnet