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 next most common cause of truck accidents is equipment failure. This can include manufacturing mistakes (defective tires) or design errors (failure to provide backing warning or object detection systems). However, most mechanical causes of truck accidents are caused by a failure to properly maintain the equipment.