VetBact - Standard Gram Staining Quiz

Question

Species/subspecies	G+	G-
Which of the following bacteria is/are Gram positive (G+) and which ones are Gram negative (G-)?
Proteus vulgaris:
Francisella tularensis tularensis:
Helicobacter felis:
Streptococcus suis:
Listeria monocytogenes:
List correct answers