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.
Personal watercraft-related accidents. The number of personal watercraft-related accidents has increased with the popularity of personal watercraft (PWC) (also commonly known as jet skis) since their introduction during the late 1960s.