Answer
The picture of the Gram stain shows that Gram-negative bacteria is present in the sample taken from the mucous lining of Maryanne's stomach. H. pylori, which is a Gram-negative bacterial strain, is still present.
Work Step by Step
1. Gram staining is a technique used to differentiate bacteria into Gram-positive bacteria and Gram-negative bacteria.
2. Gram-positive bacteria stains dark blue or purple as it retains the crystal violet dye after acetone-alcohol has been used.
3. Gram-negative bacteria stains red as it retains the counter-staining dye safranin.
4. The picture of the mucous lining sample from Maryanne's stomach shows red stained bacteria present.
5. The red staining indicates that the bacteria is Gram-negative.
6. The Gram stain was carried out to see if H. pylori is still present.
7. H. pylori is Gram-negative, so this would suggest that it is still present.
