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 first is driver error, and the second category encompasses everything else. According to studies done by the National Highway Traffic Safety Administration (NHTSA) as well as by various states, driver error is by far the largest single cause of car accidents in the United States.