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.
Accidents, also referred to as unintentional injuries, are at present the 4th leading cause of death in the U.S. and the leading cause of death for those aged1-44. Possible prevention measures. By their very natures, accidents are unintentional, but there are many ways to reduce the risk of accidental death and injury.