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.
Make sure you read the operator's manual. Your PWC is classed as a boat and is subject to the same regulations as other boats on the water. Ensure you know them. It's unsafe and illegal to operate your PWC carelessly. Some of the worst accidents occur as a result of such operation.