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.
While collision is also the leading cause of injury, the majority of boating accidents leading to injury are more mundane than life-threatening: a sprained ankle from jumping off the boat to the dock, a broken rib from falling down the companionway, a back injury from being thrown from the seat by a wave.