Groups are determined by PRECIPITIN test, serologic test to measure a specific reaction between antigen (C carbohydrate, located in the cell wall) and antibody which results in a visible precipitate. Group A Streptococci (Streptococcus pyogenes) is among the most important human pathogens.
Answers.comÂ® is making the world better one answer at a time. Striking an object is the leading cause of pwc accidents on boats.
Simply not realizing limitations of your boating skill, not paying attention to the conditions, not looking out for other boaters or others in the water and/or lack of judgment are the major causes of PWC accidents. All of these are easily preventable by being cautious, using good judgment and staying alert.