Introduction. 1  The Streptococcus anginosus (SAG) group of bacteria (previously known as the Streptococcus milleri group) includes Streptococcus anginosus, Streptococcus intermedius, and Streptococcus constellatus.
These basic cards have a generally low APR, and are unsecured cards. These have a low to medium credit limit, and consist of a few different types, such as balance transfer cards, low interest cards, and student credit cards.
In the U.S., debit cards have historically been PIN based, and credit transactions have been signature based. You had networks like Visa, MasterCard, Discover, Diners Club and American Express who originally issued only credit and charge cards requiring a signature.