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.
Steering and Stopping a PWC. A personal watercraft (PWC) is considered an inboard vessel and comes under the same rules and requirements as any other vessel. PWC operators must keep in mind that there are specific considerations when using a PWC. A PWC is a quick, highly maneuverable vessel that is a lot of fun to operate.