Most species of bacteria can be broadly divided into two groups, known as gram-positive and gram-negative. These categories ...

In this simplified diagram of gram staining, bacterial cells are first treated with a purple dye called crystal violet. The dye gets into the cells’ peptidoglycan layer (gray), tinting it purple.

Infectious bacteria are growing increasingly resistant to drugs, which is becoming a serious threat to public health worldwide. Bacteria can be classified based on various characteristics, such as by ...

Gram-negative bacteria are harder to kill because of their harder cell wall. When their cell wall is disturbed, gram-negative bacteria release endotoxins that can make your symptoms worse.

Being able to differentiate bacterial species is important for a host of reasons. One such separation – if a bacterium is Gram positive or Gram negative - is based on the structure of bacterial cell ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Most species of bacteria can be broadly divided into two groups, known as gram-positive and ...