Astra Biopharmaceuticals Ltd.

Astral Pharmaceuticals Industries,India

Astrazeneca Pharmaceutical company

Aventis Behring GmbH, Germany

Aventis Pasteur S.A. France

Aventis Pharma, Dagenham, UK

Aventis Pharma, France

Aventis Pharma, Germany

Aventis Pharma, UK

Avert Pharma Ltd.

Axcentive Sarl, France

Ayerst Wyeth PharmaceuticalsInc.,

Aztec Pharmaceuticals