December Birthstone: Blue Topaz Birthstone Color: Blue As cool and inviting as a blue lake on a blistering summer day, December's birthstone is derived from the Sanskrit word tapas, meaning fire. This is because Blue Topaz was considered by ancient civilizations to have cooling properties.
Streptococcus pneumoniae are Gram-positive bacteria in the shape of a slightly pointed cocci. They are usually found in pairs (diplococci), but are also found singly and in short chains.treptococcus pneumoniae are Gram-positive bacteria in the shape of a slightly pointed cocci. They are usually found in pairs (diplococci), but are also found singly and in short chains.
Streptococci are a large group of gram-positive, nonmotile, nonâspore-forming cocci about 0.5-1.2Âµm in size. They often grow in pairs or chains and are negative for oxidase and catalase. S pyogenes tends to colonize the upper respiratory tract and is highly virulent as it overcomes the host defense system.