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.
If your PWC capsizes and/or you fall off the vessel. The moving parts of a PWC are internal, minimizing the potential for injury. In the event that a rider falls off the PWC, most have one of the two following safety mechanisms: A cutoff switch that stops the engine when the operator falls off.