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.
Report Abuse. cause-reason because-reason for The cause of the accident was because there was so much ice. The cause of all the trouble is because people are short-tempered. Because the rain fell was the cause of the flooding.