How to Verify Non-Presence-The Challenge of Axenic Algae Cultivation.

Many phycological applications require the growth and maintenance of pure algae cultures. In some research areas, such as biochemistry and physiology, axenic growth is essential to avoid misinterpretations caused by contaminants. Nonetheless, axenicity-defined as the state of only a single strain being present, free of any other organism-needs to be verified.

Bacteriological Evaluation of Meat Processor Sanitation Practices.

One hundred eleven meat processing establishments were randomly selected and surveyed using standardized bacteriological swabbing and inspection procedures. A major objective of the survey was to determine if differences in equipment sanitation exist between processors classified by frequency of regulatory inspection, i.e.