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.
List of causes of Hypopnea syndrome Following is a list of causes or underlying conditions (see also Misdiagnosis of underlying causes of Hypopnea syndrome) that could possibly cause Hypopnea syndrome includes: 1  Defects of the nasal passage. 2  Being overweight. 3  Obesity. 4  Any condition that weakens the respiratory muscles. 5  Sedatives. 6  Alcohol abuse. 7  Smoking. 8  Old age.