Brain tumor tissue contains different pathological areas, such as tumor cell rich parts, necrotic tissues, and cyst.

Syromolotov was also quoted as saying he expected the Putin-Erdogan meeting to clarify who controlled oil- rich parts of northeast Syria.

A 31 percent output hike at Antamina, meanwhile, reflects sequencing between copper- rich and zinc- rich parts of this unusual bimetallic ore body.

It has also stunted development in one of the most resource- rich parts of the archipelago with large deposits of gold, nickel and copper.

But the rash of violence aimed at children has laid bare societal strains even in relatively rich parts of the countryside, such as Shandong.

Smart said there was growing evidence of the practice in " rich parts of London, other areas of the country … probably all over Europe".

The Shanghai government's auction of $1.1 billion bonds this week will be followed by similar sales by three local governments in rich parts of China.