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.
What is the leading cause of accident? Environmental, material, human number one cause of all auto accidents in the US - distracted drivers. get off the cell phone, stop texting, put the makeup away and set the sâ¦oda down and quit tuning the radio and reading the newspaper and and and pay attention to the road.
The major cause of clutch failure is excessive heat. Excessive. heat generated between the flywheel, driven discs, intermedi-. ate plate and pressure plate can cause the metal to flow and. the material to be destroyed. If this occurs, the clutch can. burst which can cause property damage, serious bodily injury. or death.