50 years in insect toxicology: 1956–2006

Personal reflections on 50 years of study of benzene toxicology.

The metabolism of benzene is reviewed, and the objectives of a quantitative balance study begun in 1945 are outlined; problems of toxicology and metabolism research of some 50 years ago are considered. The quantitative metabolism of 14C-benzene in the rabbit is annotated and compared with that of unlabeled benzene quantified by nonisotopic methods. The anomalies of phenylmercapturic acid and tr...

20 years of toxicology.

With over 80,000 chemicals being used in commerce worldwide, it is important to identify the human health effects of these chemicals and the levels of exposure at which they are harmful to humans. In order to address this need, the National Toxicology Program (NTP) was established in 1978; since then, the NTP has become the world's leader in designing, conducting, and interpreting various types...

Celebrating 50 Years of Occupational Therapy in Iran

Celebrating milestones is important. It provides a means of reflection and opportunity to give thanks to those that have come before us and as such fifty years of occupational therapy in Iran is a very worthy milestone to acknowledge. As we pause to celebrate this achievement, we take a moment to reflect on the journey to date, recognizing the accomplishments of many.  

50 years of Sterillium®

Celebrating 50 years

5 0 years ago, what would soon evolve to become the profession of respiratory therapy emerged as the Canadian Society of Inhalation Therapy Technicians. One year following the inception of the Society, Canadian Inhalation Therapy published its first issue. From the outset of the profession, research, evaluation and knowledge translation have been fundamental to advancing our understanding of re...