This Test Guideline describes an in vitro screen for chemical effects on steroidogenesis, specifically the production of 17ß-estradiol (E2) and testosterone (T). The human H295R adreno-carcinoma cell line, used for the assay, expresses genes that encode for all the key enzymes for...

A well-functioning government office acts as a co-ordinator of the decision-making system and as such is crucial for the government’s capacity to define and pursue its collective objectives. The “Government Office” is a generic term that refers to the institution(s) at the centre of...

China has became the world’s largest urban nation with today over 600 million urban citizens, a figure that is projected to reach 900 million by 2050. Its national economy is already concentrated in cities: almost 65% of China’s GDP was produced in its 53 metropolitan regions in 2004....

Volume II of PISA's 2009 results looks at how successful education systems moderate the impact of social background and immigrant status on student and school performance. The volume opens with an introduction to PISA and a Reader's Guide providing information that will help readers understand...

Following the initial report on the results of the first PISA survey, this report looks more closely at performance in reading. It shows reading literacy levels of students aged 15, in 32 countries, in terms of how well they can use written materials to meet the challenges of the real world and...