It consists of peptidoglycan which usually helps differentiate whether bacteria are gram positive or gram negative.

细胞壁由肽成，通常可以帮助区细的种类，判断它们是革兰氏阳还是革兰氏阴。

We can use this to differentiate Staph saprophyticus from other gram positive cocci, like streptococci and enterococci, which are catalase negative.

我们可以利用这一特来区腐生葡萄球和其他革兰氏阳球，如链球和肠球这一类过氧化氢酶阴的细。

Bacteria with no membrane, gram positive, retain the purple staining visible under a microscope.

无膜的革兰氏阳显微镜下可见保留紫色染色。

In gram positive bacteria this layer forms part of the cell wall, so penicillin can easily attack it.

革兰氏阳细中， 这一层构成了细胞壁的一部，因此青霉素能够轻易攻击它。

They have a cell wall which protects the bacteria, determines whether they are gram positive or gram negative bacteria and also helps maintain their shape.

保护细的细胞壁决定了细是革兰氏阳还是革兰氏阴，并且参与维持细的形状。

When doing a Gram stain, Clostridium tetani stains purple— or gram positive— and it's a bacillus, meaning that it looks like a big cylinder or rod under the microscope.

革兰氏染色中，破伤风梭显紫色（革兰氏染色阳），呈棒状：显微镜下外观像一个巨大的圆柱体或棒子。