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.
Some cocci form chains; bacteria of this type are called streptococci. Bacilli are rod shaped cells that are usually found individually, although a few form pairs, diplobacilli, or chains, streptobacilli. Spirochetes are the last group. The bacteria in this group are helically shaped and usually are found alone.