Is impetigo gram positive rods?
No. Impetigo is usually caused by Staphylococcus aureus, gram positive cocci.
Suppose you are viewing a Gram stained field of red rods and purple cocci through the microscope What do you conclude?
A gram stain is a way of staining cells to determine what category the bacteria falls into (gram positive or gram negative). This is a very important test used to determine what type of bacteria is causing the problem. Gram positive bacteria are types such as Staphylococcus (Staph infections) and Streptococcus (Strep). Gram negative organisms are ones such as Escherichia Coli (E.Coli) and Salmonella. They have defining characteristics that can help the doctor pin point…
This is a Gram Stain. If the technique was proper, the red rods are Gram-negative and the purple cocci are Gram-positive. This staining technique is used to help identify various bacteria. The Gram-positive bacteria that are purple hold the stain due to it's layered cell membrane. It contains a peptidoglycan layer that acts as a lattice trapping the crystal violet-Iodine dye complex.