(of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method
gram-negative详细解释
gram-negative 或 Gram-neg.a.tive adj.(形容词)Of, relating to, or being a bacterium that does not retain the violet stain used in Gram`s method.革兰氏阴性的:属于,有关或作为用革兰氏法染色不保留紫色色素的细菌的