For the 5th time in a row, Genentech, Inc, of San Francisco, CA, has topped Science's survey of top employers in the biotechnology and pharmaceutical industries. The web-based survey was carried out by Senn-Delaney Culture Diagnostics & Measurement between May 2 and June 4 of this year, and had 656 repondents.

As in previous years, the ranking scores of the top 10 companies fitted neatly into three tiers. Last year, Genentech stood alone at the top. In this year's survey, however, Boehringer Ingelheim joins that company at the highest level, with a ranking of 90 to 100. The second tier, with scores between 80 and 89, includes, in order, Roche, Amgen, AstraZeneca, and Genzyme. And completing the top 10 in a third tier, with scores of 70 to 79, the survey identifies Johnson & Johnson, Lilly, Novartis, and GlaxoSmithKline.

A detailed report and analysis of the ranking, including the complete list is available from Science Careers.