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.
See the list below: 1  The most common cause of central cord syndrome (CCS) is trauma. 2  In older adults, premorbid cervical spondylosis is a significant risk factor. 3  Accordingly, even minor falls may result in tetraplegia in populations with a narrowed spinal canal.