[Reviews for Gram stain].

The Gram stain is a rapid examination method providing useful information for diagnosis and treatment of infection. However, a molecular biology inspection and rapid immunological method have been developed, and gram stains have been disregarded recently. Therefore, I explain the usefulness of gram staining for rapid diagnosis, rapid treatment, and the economy. Moreover, I will explain gram stain method "Bartholomew & Mittwer(B&M)" which replaces the Hucker method.