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.
Accidents (unintentional injuries) are, by far, the leading cause of death among children and teens. THE TOP THREE CAUSES OF DEATH BY AGE GROUP. 0 to 1 year: 1  Developmental and genetic conditions that were present at birth. 2  Conditions due to premature birth (short gestation)  Sudden infant death syndrome (SIDS)