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.
Share this Infographic On Your Site. Teenage car accidents are the leading cause of teen deaths. Last year almost 5,000 teenage drivers were involved in fatal car wrecks. The causes are based on analysis from numerous highway safety programs ( such as www.iihs.org) and my own personal experiences.