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.
The CDC's National Center for Health Statistics (NCHS) says that 48% of deaths in youngsters 12 to 19 are caused by unintentional injuries. Of these injuries, 73% are caused by motor vehicle accidents. Other leading causes of teenage deaths are homicide (13%), suicide (11%), cancer (6%), and heart disease (3%).