Changes in concentrations of microcystins in rainbow trout, freshwater mussels, and cyanobacteria in Lakes Rotoiti and Rotoehu.

Microcystin concentrations in cyanobacteria and their accumulation in rainbow trout (Oncorhynchus mykiss) and freshwater mussels (Hyridella menziesi) in Lakes Rotoiti and Rotoehu (New Zealand) were investigated. Hatchery rainbow trout were added to an enclosure in Lake Rotoiti where concentrations of microcystins in the phytoplankton and cyanobacterial cell concentrations could be closely monitored. Rainbow trout that were free to roam in the entire area of each lake were also included in the study.

The campbell Soup Company program.

During the past 15 years, employees at more than 20 Campbell Soup Company plants have become involved in screening efforts aimed at modifying risk factors that might be associated with premature atherosclerosis. Many employees with significant risk factors have been identified and have been offered guidance to inculcate behaviors associated with reduced risk. Interventions have been made available for various problems including hypertension, hyperlipidemia or obesity, exercise, and smoking cessation.

The effect of halothane on the baroresponse of adult and baby rabbits.

The effect of anesthesia on the baroresponse of infants is not known. Therefore, the authors studied the baroreceptor activity of adult and 10- to 14-day-old rabbits during halothane anesthesia. The arterial systolic pressure was increased 20 to 30 per cent by injecting 0.