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.

Gram negative bacteria cell wall structure. Gram negative bacteria are characterized by the presence of the periplasmic space, which is a single layer of peptidoglycan sandwiched between the ...

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 ...

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 ...

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.

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 ...